The former Florida senator, 54, has rapidly gained Trump’s ear on foreign policy in the early months of his second term. Rubio is not only secretary of state, but also replaced Waltz as national security adviser, making him a permanent fixture in the White House.

No nuclear weapon has been deployed in war since the U.S. dropped atomic bombs on Hiroshima and Nagasaki in Japan in 1945, and any use of such weapons against an Iranian facility would be extremely controversial in the U.S. and worldwide.

Trump said he was waiting to see “whether or not people come to their senses.”