WASHINGTON (Associated Press) -- Republican John McCain can claim the most eclectic overseas portfolio among presidential candidates: He has ties to a Cambodian reality TV show, a Bolivian law-and-order guide and rock concerts in the former Soviet Union.

McCain seldom mentions his role as chairman of the International Republican Institute. But it has provided a forum to make him known to world leaders — he addressed top European Union officials in Brussels, Belgium, last year on trans-Atlantic issues, for example — and a way to observe firsthand the politics of other countries. It's the kind of foreign policy expertise McCain says his GOP rivals lack.