[img]http://d.yimg.com/a/p/ap/20100214/capt.709812511d7444ee8f362a800e5a18fc.afghanistan_tok104.jpg?x=130&y=85&q=85&sig=96e7j9wtFDEQyEfgMJgl6w--[/img]AP - Bombs and booby-traps slowed the advance of thousands of U.S. Marines and Afghan soldiers moving through the Taliban-controlled town of Marjah — NATO's most ambitious effort yet to break the militants' grip over their southern heartland.