WASHINGTON (Reuters) - Mitt Romney launched a fresh attack on President Barack Obama's Middle East policy on Monday, saying the United States is moving dangerously closer to being pulled into the region's chaos and that puts "our security at risk." In a Wall Street Journal opinion piece, the U.S. Republican presidential nominee pointed to recent developments in Syria, Libya and Egypt as well as uncertainty over Israel and Iran and called for "a new strategy toward the Middle East," although he offered no new details about his proposed plans. ...