WASHINGTON (AFP) — US Senator John McCain said Tuesday that the Vietnam visit paid by the US warship named for his father and grandfather was a "historic and hopeful" sign for ties between the former foes. "Today's port call of the USS John McCain into Vietnam is a historic and hopeful occasion," the Arizona Republican said in a statement as the destroyer USS John S. McCain stopped in Vietnam's central port city of Danang. "Vietnam has become one of America's most important and most promising emerging partners in the Asia-Pacific region," McCain said. (snip) "Today's port call is certainly rich...