source: American and British cooperation ended with the Atomic Energy Act of 1946, and in October 1952, Britain became the third country to test an independently developed nuclear weapon.
target: American and British cooperation ended with the Atomic Energy Act of 1946. In October 1952, Britain became the third country to test an independently developed nuclear weapon.
references: American and British cooperation ended with the Atomic Energy Act of 1946. In October 1952, Britain became the third country to test an independently developed nuclear weapon.