WASHINGTON - George W. Bush embarked on his second term as president Thursday, telling a world anxious about war and terrorism that the United States would not shrink from new confrontations in pursuit of "the great objective of ending tyranny." Four minutes before noon, Bush placed his left hand on a family Bible and recited 39 tradition-hallowed words that every president since George Washington has uttered. With 150,000 American troops deployed in Iraq (news - web sites) at a cost of $1 billion a week and more than 1,360 killed, Bush also beseeched Americans for patience. "Our country has accepted...