pAn escalating showdown between President Obama and leading Republican lawmakers over a deadly September attack in Libya turned angry and personal Wednesday./ppObama accused Sens. John McCain (R-Ariz.) and Lindsey O. Graham (R-S.C.) of trying to ?besmirch? the reputation of Susan E. Rice, the U.S. ambassador to the United Nations, and to hold her potential nomination as secretary of state hostage to their demand for a broad Watergate- and Iran-contra-style investigation of alleged intelligence and security lapses surrounding the attack on the U.S. diplomatic mission in Benghazi, which killed four Americans./pa href="http://www.washingtonpost.com/world/national-security/on-benghazi-attack-angry-words-from-obama-and-republicans/2012/11/14/1483153e-2e94-11e2-beb2-4b4cf5087636_story.html?wprss=rss_world"Read full article #62;#62;/aimg width='1' height='1' src='http://feeds.washingtonpost.com/c/34656/f/636708/s/25980bbd/mf.gif' border='0'/br/br/a href="http://da.feedsportal.com/r/148659834113/u/0/f/636708/c/34656/s/25980bbd/a2.htm"img src="http://da.feedsportal.com/r/148659834113/u/0/f/636708/c/34656/s/25980bbd/a2.img" border="0"//aimg width="1" height="1" src="http://pi.feedsportal.com/r/148659834113/u/0/f/636708/c/34656/s/25980bbd/a2t.img" border="0"/