 Complete the following phrase:  In 1973, Libya claimed much of the Gulf of Sidra south of Latitude 31 30 as its territorial waters and subsequently declared a line of death, the crossing of which would invite a military response. The United States did not recognize Libyas territorial claims and continued to challenge the line, leading to military hostilities in August 1981 and March 1986. A terrorist attack which killed two American soldiers and one Turkish civilian on 5 April 1986 was linked to Libya and prompted the U.S. to carry out 