{"id":3100,"date":"2016-02-03T09:53:24","date_gmt":"2016-02-03T09:53:24","guid":{"rendered":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/?p=3100"},"modified":"2026-03-05T11:12:18","modified_gmt":"2026-03-05T11:12:18","slug":"truman-doctrine","status":"publish","type":"post","link":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/truman-doctrine\/","title":{"rendered":"Truman Doctrine: A Detailed Summary"},"content":{"rendered":"\n<p>The Truman Doctrine is one of the most significant events of the history of the <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/category\/cold-war\/\" data-type=\"category\" data-id=\"31\">Cold War<\/a>.\u00a0\u00a0The Cold War was a major world event that took place from approximately 1945 until 1990.\u00a0 In general, the Cold War was a period of increased tensions and hostility between the superpowers of the United States and the Soviet Union (USSR).\u00a0 The Truman Doctrine was a policy of <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/containment-in-the-cold-war\/\" data-type=\"post\" data-id=\"3091\">containment<\/a> by the United States against the Soviet Union, that was practiced throughout nearly the entire history of the Cold War.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Truman Doctrine in the Cold War - History Crunch Investigates\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/VmRx-3RwK5E?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">TRUMAN DOCTRINE &#8211; COLD WAR<\/h2>\n\n\n\n<p>When\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/category\/world-war-ii\/\" data-type=\"category\" data-id=\"21\">World War II<\/a>\u00a0came to an end in 1945, the Allied powers (USA, Britain and the Soviet Union) held conferences to discuss how Germany should be divided up upon its defeat.\u00a0 The first conference was held at\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/yalta-conference\/\" data-type=\"post\" data-id=\"3133\">Yalta<\/a>\u00a0in February of 1945 and the second was held at\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/potsdam-conference\/\" data-type=\"post\" data-id=\"3128\">Potsdam<\/a>\u00a0in July of the same year.\u00a0 The agreements ultimately led to the splitting of the defeated Germany into four \u201callied zones\u201d with portions controlled by the Soviet Union, United States, Britain and France.\u00a0 The conferences are considered by many historians to be the early stages of the\u00a0Cold War since this was when tensions started to show between the former allies of the Soviet Union and the United States.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Yalta-Conference-1024x576.jpg\" alt=\"Yalta Conference\" class=\"wp-image-6222\" srcset=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Yalta-Conference-1024x576.jpg 1024w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Yalta-Conference-300x169.jpg 300w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Yalta-Conference-768x432.jpg 768w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Yalta-Conference.jpg 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Winston Churchill, Franklin D. Roosevelt and Joseph Stalin at the Yalta Conference in 1945.<\/figcaption><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>As the Allied countries liberated Europe from Nazi control and pushed the German army back into its own country, another development began to emerge.\u00a0 More specifically,\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/joseph-stalin\/\" data-type=\"post\" data-id=\"2970\">Joseph Stalin\u2019s<\/a>\u00a0forces captured and remained control over the European territory that they \u2018liberated\u2019.\u00a0 United States President\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/harry-truman\/\" data-type=\"post\" data-id=\"3218\">Harry S. Truman<\/a>, along with others, viewed this as a threat to the <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/democracy-overview\/\" data-type=\"post\" data-id=\"4015\">democratic<\/a> world, because it saw the ideology of <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/communism\/\" data-type=\"post\" data-id=\"3914\">communism<\/a> spreading throughout Europe.\u00a0 Truman was concerned that many other nations would \u2018fall\u2019 to communism and threaten democracy around the world.<\/p>\n\n\n\n<p>In response Truman argued that the United States and its allies should actively combat the spread of communism wherever it emerges.\u00a0 Historians refer to this idea as the Truman Doctrine.\u00a0 The Truman Doctrine was followed by the United States throughout the course of the Cold War and was an important reason for America\u2019s involvement in events, such as: the\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/berlin-blockade\/\" data-type=\"post\" data-id=\"3137\">Berlin Blockade<\/a>,\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/korean-war-overview\/\" data-type=\"post\" data-id=\"3097\">Korean War<\/a>\u00a0and the\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/vietnam-war-overview\/\" data-type=\"post\" data-id=\"3119\">Vietnam War<\/a>. \u00a0In general, historians refer to this as &#8216;<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/containment-in-the-cold-war\/\" data-type=\"post\" data-id=\"3091\">containment<\/a>&#8216; because the Truman Doctrine involved the United States trying to contain <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/soviet-expansionism-in-the-cold-war\/\" data-type=\"post\" data-id=\"3094\">Soviet expansionism<\/a> wherever it emerged.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Containment-in-the-Cold-War-1024x576.jpg\" alt=\"Containment in the Cold War\" class=\"wp-image-6185\" srcset=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Containment-in-the-Cold-War-1024x576.jpg 1024w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Containment-in-the-Cold-War-300x169.jpg 300w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Containment-in-the-Cold-War-768x432.jpg 768w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Containment-in-the-Cold-War.jpg 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Containment in the Cold War was significant because it was a major factor of American foreign policy for decades, especially in relation to conflicts, such as: Korean War and Vietnam War.<\/figcaption><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">TRUMAN DOCTRINE &#8211; CONTAINMENT<\/h2>\n\n\n\n<p>The Cold War is often viewed as an <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/ideological-conflict-in-the-cold-war\/\" data-type=\"post\" data-id=\"3122\">ideological conflict<\/a> because it displayed the difference in worldview between the two nations in terms of <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/democracy-overview\/\" data-type=\"post\" data-id=\"4015\">democracy<\/a> and <a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/capitalism\/\" data-type=\"post\" data-id=\"3892\">capitalism<\/a> versus\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/communism\/\" data-type=\"post\" data-id=\"3914\">communism<\/a>\u00a0and\u00a0<a href=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/dictatorship\/\" data-type=\"post\" data-id=\"4020\">dictatorship<\/a>. As such, the United States and the Soviet Union differed greatly in their views of how the world should be organized following the major events of World War II.\u00a0 For their part, the United States feared Soviet expansionism into regions in Europe and around the world.\u00a0 As a result, the United States President at the start of the Cold War, Harry S. Truman, developed the Truman Doctrine policy in which the country would work to contain the spread of communism.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"960\" height=\"720\" src=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Harry-S.-Truman-Quote-4.jpg\" alt=\"Harry S. Truman Quote 4\" class=\"wp-image-6190\" srcset=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Harry-S.-Truman-Quote-4.jpg 960w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Harry-S.-Truman-Quote-4-300x225.jpg 300w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Harry-S.-Truman-Quote-4-768x576.jpg 768w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>The United States, led by Harry S. Truman feared that communism as an ideology would spread throughout Europe and the rest of the world.&nbsp; For example, after World War II both Greece and Turkey were facing financial crisis.&nbsp; Due to their proximity to Soviet territory and the rise of communism in recent decades it was feared that the two countries might fall into the Soviet sphere of influence and become communist.&nbsp; In a speech in 1947 on the crisis facing both countries Harry S. Truman stated:<\/p>\n\n\n\n<p><em>\u201cI believe that it must be the policy of the United States to support free peoples who are resisting attempted subjugation by armed minorities or by outside pressures. I believe that we must assist free peoples to work out their own destinies in their own way. I believe that our help should be primarily through economic and financial aid, which is essential to economic stability and orderly political processes.\u201d<\/em>&nbsp;<\/p>\n\n\n\n<p>\u200bIn this passage, Truman is promoting the idea that the United States should financially support the two nation to avoid them turning to communism.&nbsp; This approach by Truman formed the basis of American foreign policy throughout the remainder of the Cold War in the form of containment, which historians refer to as the Truman Doctrine.&nbsp; In conclusion, the Truman Doctrine was the idea that the United States should attempt to contain the Soviet sphere of influence and the spread of communism.&nbsp; This foreign policy caused the United States to enter into conflict with the Soviet Union as it attempted to thwart Soviet expansionism in events such as:&nbsp;Berlin Blockade,&nbsp;Korean War,&nbsp;Vietnam War, etc.&nbsp; As such, many historians view this as a cause of the Cold War because it increased tensions between the two superpowers and led to several conflicts between the two superpowers.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"720\" src=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Harry-S.-Truman-Quote-2.jpg\" alt=\"Harry S. Truman Quote 2\" class=\"wp-image-6188\" srcset=\"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Harry-S.-Truman-Quote-2.jpg 960w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Harry-S.-Truman-Quote-2-300x225.jpg 300w, https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-content\/uploads\/2026\/03\/Harry-S.-Truman-Quote-2-768x576.jpg 768w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The Truman Doctrine was a foreign policy announced in 1947 that pledged economic and military aid to countries threatened by communism. Historians view this as important to the American strategy of containment in the Cold War.<\/p>\n","protected":false},"author":1,"featured_media":6203,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":14,"footnotes":""},"categories":[31,27,26],"tags":[57,103,15,115,102],"class_list":["post-3100","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cold-war","category-korean-war","category-vietnam-war","tag-american-history","tag-cold-war","tag-history","tag-korean-war","tag-vietnam-war"],"_links":{"self":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts\/3100","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/comments?post=3100"}],"version-history":[{"count":6,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts\/3100\/revisions"}],"predecessor-version":[{"id":6223,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/posts\/3100\/revisions\/6223"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/media\/6203"}],"wp:attachment":[{"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/media?parent=3100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/categories?post=3100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/crunchlearning.com\/website_ec2cbfb0\/wp-json\/wp\/v2\/tags?post=3100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}