Yes. It was a scary time. It seems to me that Eisenhower was more prepared to use nuclear bombs than either side ever was during the cold war. But JFK seemed ready to threaten their use during the Cuban missile crisis as well.
Still, it seems to me that nuclear weapons are often labeled immoral in themselves, when they can be as small or as large as we wish. Conventional weapons can have equally devastating results, as can gulags and swords.
It is possible that Eisenhower used the same logic as Harry Truman when Eisenhower ended the Korean War.
The Korean War began in June 1950 [during the Truman Administration] when North Korea invaded South Korea. In September 1950, the U.S. used whatever forces were available after demobilization to land behind North Korean lines at Inchon. In November 1950, the Chinese crossed the Yalu River in mass attacks and pushed the U.S. (and UN) troops back. For the next 2+ years, there was a bloody back and forth. Long story.
Eisenhower pledged to end the Korean War.
There is a body of thought that he ended it by firing a nuclear weapon.
What happened was that in June 1953, Eisenhower had the U.S. Army fire the Atomic Cannon at the Nevada Test Site (a suburb of Las Vegas) with the shell aimed at Frenchman’s Flat. It was done with full media participation; in fact, the reviewing stand is still there.
Within a couple of weeks, the Korean War ended.
One could postulate that the North Koreans and Chinese figured Eisenhower might start blasting away with nuclear artillery shells at their massed troops.
The North Koreans and Chinese already had been experiencing the effect of B-29’s dropping fragmentation bombs on their troops, killing thousands at each attack. Tens of thousands were killed.
They may have figured that we would amp up their casualties by firing spreads of nuclear artillery shells.