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The Soviet Union
The closest we came to a nuclear confrontation with Russia that I know of, was under John F. Kennedy during the Cuban Blockade in 1962.
The USSR retaliated to the USA's location of nuclear missiles in Europe by setting up nuclear missile bases in Cuba resulting the US blockade of Cuba.
The placement of U.S. nuclear missiles in Turkey is thought to have provoked the Cuban Missile Crisis. Missiles in Turkey were close enough to strike Moscow, so Russia placed armaments in Cuba, which was within striking distance of U.S. soil. The Missile Crisis, began on October 14th 1962. Robert Kennedy said, during negotiations with the Russians that the missiles would be removed within a short time after the crisis ended. The Missile Crisis ended on October 28th of 62 and the missiles were quietly taken out of turkey some time after April 24th 1963.
One event that shows how close the US and USSR came to nuclear war during the Cold War is the Cuban Missile Crisis in 1962. The Soviet Union placed nuclear missiles in Cuba, sparking a tense standoff with the US that lasted for several days. Another event is the 1983 incident involving the Soviet military officer Stanislav Petrov, who prevented a nuclear war by correctly identifying a false alarm of a US missile attack. This incident highlighted the potential for accidental nuclear war due to technological and human errors.
Cuba.
Russian missiles located in Cuba.
The Soviet Union
A U-2 reconnaissance flight over Cuba on October 15, 1962, captured the first evidence of Soviet SS-4 nuclear missiles being deployed in Cuba.
The Cuban Missile Crisis. The Soviet Union was putting missiles on Cuba, with nuclear warheads. The USA found out and put a naval blockade around Cuba. For a few days, the threat of nuclear WW III between the USA and Russia looked like it might be a real possibility. The Russian ships sailed back to Russia. The Russians took their missiles out of Cuba, and the USA took their missiles out of Turkey.
The closest we came to a nuclear confrontation with Russia that I know of, was under John F. Kennedy during the Cuban Blockade in 1962.
From October to November 1962.
The USSR retaliated to the USA's location of nuclear missiles in Europe by setting up nuclear missile bases in Cuba resulting the US blockade of Cuba.
The Soviet Union began placing nuclear armed guided missiles in Cuba, where they could be used to attack to US with almost no warning. The US declared that any attack coming from Cuba would be considered an attack from the Soviet Union, would result in retaliation to the Soviet Union, and directed that the missiles be removed from Cuba. The US Navy began a shipping blockade and stopped additional missiles from being taken to Cuba.
In 1962, the world learned that there was a build up of medium range missiles and missile bases in Cuba. U2 spy planes actually photographed the missiles and the bases.
The Cuban Missile Crisis. In 1962, The Soviet Union, in collaboration with Fidel Castro, began building nuclear missiles on the Island of Cuba. Because the Soviets technology at the time limited their nuclear missiles range, they felt that having missiles in Cuba was the only way of defending against an attack by the United States, whose nuclear arsenal could reach the Soviet Union at any time. Castro, after the failed Bay of Pigs invasion, thought that another attack by the U.S was inevitable and agreed to the Soviet installations. President Kennedy imposed a quarantine on the island by surrounding it with naval vessels and ordered the missiles to be dismantled. Several tense days went by, and the world was on the brink of nuclear war. the worst day being October 27th when a U2 reconnaissance plane was shot down. On October 28th, The U.S and the Soviet Union came to an agreement. The missiles and bombers would be removed from Cuba, and the U.S agreed not to invade Cuba, thus ending the crisis.
Yes they were at the time of the Cuban Missie Crisis in 1962. JFK and the Russian leader were at a standstill until the Russian leader backed down first.