Complex sentence: The Pakistan Air Force Strategic Forces Command, known as AF Strategic Command, is one of the major commands of the Pakistan Air Force responsible for air force elements of strategic deterrence (Pakistan's nuclear arsenal).
Split into simpler sentences: The Pakistan Air Force Strategic Forces Command, known as AF Strategic Command, is a PAF Command. It is one of the major commands of the Pakistan Air Force and is responsible for air force elements of strategic deterrence (Pakistan's nuclear arsenal).