Conflicts of national interest caused the world war ii alliance between the united states and the soviet union to be replaced by a cold war that lasted 45 years initially a dispute over the future of europe, it grew to include confrontations around the world. Although the soviet union had nuclear weapon capabilities in the beginning of the cold war, the united states still had an advantage in terms of bombers and weapons in any exchange of hostilities, the united states would have been capable of bombing the soviet union, whereas the soviet union would have more difficulty carrying out the reverse mission.
Conflicts of national interest caused the world war ii alliance between the united states and the soviet union to be replaced by a cold war that lasted 45 years initially a dispute over the future of europe, it grew to include confrontations around the world nuclear arms race for their part, the soviet union had regarded the united. The nuclear arms race was a competition for supremacy in nuclear warfare between the united states, the soviet union, and their respective allies during the cold war during this period, in addition to the american and soviet nuclear stockpiles, other countries developed nuclear weapons, though none engaged in warhead production on nearly the same scale as the two superpowers.
In october 1961, the soviet union detonates a nuclear device, estimated at 58 megatons, the equivalent of more than 50 million tons of tnt, or more than all the explosives used during world war ii it is the largest nuclear weapon the world had ever seen at that time. Complicated and tension-filled negotiations between the united states and the soviet union finally result in a plan to end the two-week-old cuban missile crisis. From the onset of the salt negotiations between the united states and the soviet union, the two countries began the process of reshaping their relations on the basis of peaceful cooperation one of the primary goals in this relationship was the prevention of war, especially nuclear war.
The development of the atomic bomb and the subsequent arms race between the united states and the soviet union ushered in a new conflict: the cold war einstein feared this battle would end with the destruction of civilization.
The relations between the united states of america and the union of soviet socialist republics (1922–1991) succeeded the previous relations from 1776 to 1917 and predate today's relations that began in 1992 full diplomatic relations between the two countries were established late (1933) due to mutual hostility. The soviet union and the united states stayed far apart during the next three decades of superpower conflict and the nuclear and missile arms race beginning in the early 1970s, the soviet regime proclaimed a policy of détente and sought increased economic cooperation and disarmament negotiations with the west. The united states and the soviet union signed an agreement on measures to reduce the risk of outbreak of nuclear war on september 30, 1971 it provided for nuclear safeguards, immediate notification of an unexplained nuclear detonation, and advance notice of missile launches.