U.S. to cut nuclear launchers under treaty with Russia - officials

WASHINGTON (Reuters) - The United States will scale back its nuclear bombers, submarine launchers and ballistic missiles in the first cuts to its leftover cold war nuclear arsenal since ratifying a landmark treaty with Russia in 2011, officials said on Tuesday.

Under the treaty, known as New Start, the U.S. military will disable four missile launch tubes on each of the 14 U.S. nuclear submarines, convert 30 B-52 nuclear bombers to conventional use and empty 50 intercontinental ballistic missile silos, senior administration officials said.