President Joe Biden walks down the stairs of Air Force One as he arrives at Brandenburg Airport in Schoenefeld near Berlin, Germany, Thursday, Oct. 17, 2024. (AP Photo/Ben Curtis)

Republican presidential nominee former President Donald Trump speaks at the 79th annual Alfred E. Smith Memorial Foundation Dinner, Thursday, Oct. 17, 2024, in New York. (AP Photo/Julia Demaree Nikhinson)

Democratic presidential nominee Vice President Kamala Harris speaks at a campaign rally at the Resch Expo in Green Bay, Wis., Thursday, Oct. 17, 2024. (AP Photo/Susan Walsh)

FILE - In this image taken from video released by Russian Defense Ministry Press Service on Sept. 17, 2024, Russian RS-24 Yars strategic ballistic missiles launcher moves out a hangar during a drills in Ivanovo region, Russia. (Russian Defense Ministry Press Service photo via AP, File)

FILE - In this image taken from video released by the Russian Defense Ministry on Feb. 20, 2019, a Russian Poseidon nuclear-powered underwater drone is photographed being test-launched, in Russia. (Russian Defense Ministry Press Service via AP, File)

FILE - In this image taken from video provided by RU-RTR Russian television via AP television on Thursday, March 1, 2018, the Avangard hypersonic vehicle blasts off during a test launch at an undisclosed location in Russia. (RU-RTR Russian Television via AP, File)

FILE - In this photo released by Russian Defense Ministry Press Service on April 20, 2022, a Sarmat intercontinental ballistic missile is launched from Plesetsk in northwestern Russia. (Russian Defense Ministry Press Service via AP, File)

FILE - In this image taken form video released by the Russian Defense Ministry Press Service on June 12, 2024, Russian soldiers load an Iskander-M short-range ballistic missile launchers at a firing position as part of Russian military drill intended to train the troops in using tactical nuclear weapons. (Russian Defense Ministry Press Service via AP, File)