shepard: u.s. troops are preparing to leave iraq by year s end, all of them. and now president obama s planning a new deployment, this time to australia. hello, china. the commander and chief there on his nine day pacific trip. he and the australian prime minister agreement for the largest u.s. troop presence down under since world war ii. it would eventually put some 2500 marines in the northern port town of darwin. defense officials say it s the perfect police place from which to respond to crises in the region, which brings us to china. its recently shown increasing aggression toward its neighbors, often over the long disputed south china sea. a congressional panel is urging the white house to increase scrutiny on the people s republic as intelligence indicates china has tripled its military budget in the past decade. the president says the u.s. does not fear the asian super power but that our increased