WASHINGTON - President Bush is poised to punish Moscow for its invasion of Georgia by canceling a once-celebrated deal for civilian nuclear cooperation between the U.S. and Russia. With relations between the two nations in a nearly Cold War-like freeze over Russia's actions against its neighbor last month, planning is under way at the White House for the largely symbolic move by Bush, according to senior administration officials, who spoke on condition of anonymity because the decision was not yet final. ...