Obama arrives in Manila for APEC summit, bilateral meetings

MANILA (Reuters) - U.S. President Barack Obama arrived in Manila on Tuesday for the first of back-to-back Asia-Pacific summits that were supposed to be a chance for the United States to  reinforce trade and security ties with the economically dynamic region but which are now clouded by the Islamic State threat half a world away. Obama’s visit to Manila for the Asia-Pacific Economic Cooperation (APEC) gathering on Wednesday and Thursday comes on the heels of the G20 summit in