Lend-Lease

Lend-Lease, formally the Lend-Lease Act and introduced as An Act to Promote the Defense of the United States, was a policy under which the United States supplied the United Kingdom, the Soviet Union, the renegade Free French force, Republic of China, and other Allied nations with food, oil, and materiel between 1941 and 1945. The aid was given free of charge on the basis that such help was essential for the defense of the United States.

The Lend-Lease Act was signed into law on March 11, 1941, and ended on September 20, 1945. A total of $50.1 billion dollars worth of supplies was shipped, or 17% of the total war expenditures of the U.S.A. In all, $31.4 billion went to the United Kingdom, $11.3 billion to the Soviet Union, $3.2 billion to France, $1.6 billion to China, and the remaining $2.6 billion to other Allies. Roosevelt's top foreign policy advisor Harry Hopkins had effective control over Lend-Lease, making sure it was in alignment with Roosevelt's foreign policy goals.

Materiel delivered under the act was supplied at no cost, to be used until returned or destroyed. In practice, most equipment was destroyed, although some hardware (such as ships) was returned after the war. Supplies that arrived after the termination date were sold to the United Kingdom at a large discount for £1.075 billion, using long-term loans from the United States, which were finally repaid in 2006. Similarly, the Soviet Union repaid $722 million in 1971, with the remainder of the debt written off.

Reverse Lend-Lease to the United States totalled $7.8 billion. Of this, $6.8 billion came from the British and the Commonwealth. Canada also aided the United Kingdom and other Allies with the 'Billion Dollar Gift and Mutual Aid' totalling $3.4 billion in supplies and services (equivalent to $61 billion in 2020) .