After rebel forces take over Taiz , they say , government forces begin to regroup . Saleh is in Saudi Arabia for treatment after being wounded . A U.S. official says the situation in Yemen makes his efforts ` ` more difficult ''
After rebel gunmen take over Taiz , witnesses say , government forces try to regroup . Saleh is in Saudi Arabia for treatment after being wounded . A U.S. official says the unrest in Yemen makes counterterrorism efforts `` more difficult ''