The immediate need of this statement was critical because of the crisis in the country of Greece. This crisis was because Britain announced that they could no longer assume the economic and other burdens of continued participation in Greek affairs. Politically, the United States realized that the United Nations could not guarantee peace. Economically, the Truman Doctrine recognized that the plans that had been developed during the war were not adequate enough to rebuild and rehabilitate war-torn countries of the world. There needed to be something more to ensure that these countries would be stable enough to resist Communist pressure. The Truman Doctrine implies that the responsibility that America had for the economic welfare for these war-torn countries did not end immediately after the war. The economic aid that President Truman proposed totaled about $400 million. President Truman knew the United States was the only country that could aid in this economic hardship of Greece and Turkey. Truman argued that the United States could no longer stand by and allow the forcible expansion of Soviet totalitarianism into free, independent nations, because American national security now depended upon more than just the physical security of American territory. Rather, in a sharp break with its traditional avoidance of extensive foreign commitments beyond the Western Hemisphere during peacetime, the Truman Doctrine committed the United States to actively offering assistance to preserve the political integrity of democratic nations when such an offer was deemed to be in the best interest of the United States.