Qatar assures U.S. it is committed to fighting Islamic State

By Julia Edwards WASHINGTON (Reuters) - Qatar is committed to defeating the Islamic State, its emir, Sheikh Tamim Bin Hamad al-Thani, assured U.S. President Barack Obama on Tuesday in his first official visit to the White House. Obama said the emir committed to fighting Islamic extremists and supporting the moderate opposition in Syria. Qatar is part of the U.S.-led coalition fighting the Islamic State, which controls a wide swath of territory in Syria and Iraq. The two leaders are "deeply