[img]http://d.yimg.com/a/p/ap/20100901/capt.36475c0e70774708ba101e272418caf7-36475c0e70774708ba101e272418caf7-0.jpg?x=130&y=68&q=85&sig=sVXf.4Q1R7T9DpPoCEPY3Q--[/img]AP - U.S. Defense Secretary Robert Gates arrived in Afghanistan's capital Thursday for meetings with President Hamid Karzai and top NATO commander Gen. David Petraeus.