WASHINGTON (AFP) — US Senator John McCain said Monday that he worried about eroding Republican support for the war in Afghanistan and "the rise of protectionism and isolationism" in his party. "I worry a lot about the rise of protectionism and isolationism in the Republican Party," McCain, President Barack Obama's Republican rival for the White House in 2008, told a foreign policy forum. (snip) The Arizona lawmaker cited incoming Republican senator Rand Paul, stressing "already he has talked about withdrawals from, or cuts in defense, et cetera, And a number of others are." "There's no doubt that this new group...