Cuba calls US nuclear submarine in Guantanamo Bay 'provocative escalation'
The ministry did not specify whether the submarine was armed. It said it was at the base from July 5 to July 8.
The exterior of Camp Delta is seen at the U.S. Naval Base at Guantanamo Bay, March 6, 2013. The facility is operated by the Joint Task Force Guantanamo and holds prisoners who have been captured in the war in Afghanistan and elsewhere since the September 11, 2001 attacks. 
