President Trump bemoaned the current state of U.S.-Russia relations Wednesday morning, arguing theyre more precarious today than at any other point.

Our relationship with Russia is worse now than it has ever been, and that includes the Cold War. There is no reason for this, Trump tweeted. Russia needs us to help with their economy, something that would be very easy to do, and we need all nations to work together. Stop the arms race?

Tensions are indeed high as the Kremlin fights off pressure for supporting the Assad regime in Syria as well as allegations it influenced the 2016 U.S. election and poisoned a former Russian spy living in the United Kingdom.

But there have also been previous points in which all-out war or at least frosty relations were all but certain.

The U.S. and Soviet Union faced an apex of tension in 1962, when the U.S.S.R. delivered missiles to Cuba.

It came within a year of the botched Bay of Pigs, when U.S.-backed Cuban exiles failed to overthrow the Communist Castro regime.

The two superpowers were embroiled in a 13-day standoff that left the eastern seaboard on edge that a nuclear attack on a U.S. city was imminent.

The Kennedy administration worked backchannels with the Kremlin to avoid a full-blown nuclear war.

U.S. Navy ships ran a blockade around Cuba to stop any Soviet freighters that were believed to bring more missiles to the island.

Pilot Rudy Anderson was the lone U.S. casualty in the crisis when his U-2 spyplane was shot down over Cuba.

Peace was brokered in secret with an agreement to pull old U.S. missiles out of Turkey in exchange for removing the rockets out of Cuba.

Russias floundering economy has partially been attributed to economic sanctions from Moscows role in the Ukrainian Civil War.

The U.S. sanctioned Russia in March 2014 after it annexed Crimea from the Ukraine, backing the pro-Russian forces in that region.

The Obama administration put further pressure on Russian President Vladimir Putin after his allies in Ukraine were accused of downing Malaysian Airlines flight MH17, which killed all 298 people on board.

While the Cuban Missile Crisis was the most dangerous of run-ins with the Soviet Union or Russia, there were plenty of other hot points amid the Cold War.

From 1945 to 1991, Washington and Moscow were locked in a bitter arms race, filled with tense diplomatic relations and spy swaps.

The two sides fought a number of proxy wars, backing opposing forces in Korea, Vietnam and Afghanistan.

Yes, the U.S. has sent troops into Russia before.

Roughly 5,500 Army soldiers were sent to northern Russia in 1918. The so-called Polar Bear Expedition was to back up forces loyal to the monarchy in an ill-fated civil war against the Bolsheviks, who took power and established what became the Soviet Union.

U.S. soldiers fought the Red Army until the summer of 1919, losing 244 soldiers.

Another 7,500 U.S. troops were deployed to Siberia to back up anti-Bolshevik forces.