The Air Force is launching a sweeping cancer study after several officers assigned to a missile unit in Montana were diagnosed with non-Hodgkin lymphoma, a type of cancer that forms in the body’s lymph system.

China and Japan kicked off their first direct defense talks in four years in Tokyo this week, aiming to cool tensions after a period of major stress for the region.

Israeli troops entered a major Palestinian city in the occupied West Bank in a rare, daytime arrest operation.