Dick Cheney was one of the last of his breed: the Cold War Republican. The former vice president, who died Tuesday at age 84 , was a hardheaded man who wore many hats, from wunderkind 34-year-old White House chief of staff to defense secretary and No. 2 Republican in the House. He left his most vivid mark as veep from 2001 to 2008. For everything Republicans have in common — and all their longstanding divisions on issues such as immigration and trade — a hawkish stance on foreign affairs was