Weapons : proliferation : agreement between the United States of America and Ukraine, signed at Kiev, October 22, 2001; and agreements amending the agreement, signed at Kiev and Washington, March 15 and 26, 2004 ... at Washington, June 27, 2005 ... at Kiev and Washington, August 31 and September 12, 2006 ... at Kiev and Washington, July 30 and August 17, 2007 ... at Kiev and Washington, April 4 and 16, 2008 ... at Kiev and Washington, April 9 and 29, 2009.