A communist government took power at the end of World War Two. ... East Germany was part of the Soviet zone of occupation agreed at the Yalta Conference and in 1945 the Soviets set up a communist regime.
After 36 years in existence, the Warsaw Pact—the military alliance between the Soviet Union and its eastern European satellites—comes to an end. The action was yet another sign that the Soviet Union was losing control over its former allies and that the Cold War was falling apart.
Wallace's main argument is that he cannot but feel that these actions (bomb-testing) must make it look to the rest of the world as if the U.S. was only paying lip service to peace at the conference table.