Defense : agreements between the United States of America and Greece extending agreement of July 8, 1990, effected by exchange of notes at Athens, January 19 and February 19, 1998, effected by exchange of notes at Athens, May 4 and 5, 1999, effected by exchange of notes at Athens, April 20 and May 5, 2000, effected by exchange of notes at Athens, March 13 and April 27, 2001, effected by exchange of notes at Athens, April 11 and 29, 2002, effected by exchange of notes at Athens, April 11 and May 5, 2003.