WASHINGTON, March 30: Nuclear powered aircraft carrier USS Nimitz will sail on Monday to support US operations in Iraq and Afghanistan, the US Navy said, amid a spike in tensions over Iran's seizure of 15 British marines and sailors. The Nimitz, and its battle group of destroyers and guided missile cruisers, will relieve the USS Dwight D. Eisenhower, which this week took part in war games exercises in the Gulf with another carrier, USS John S Stennis.—AFP