Army soldiers man a checkpoint in al-Mahfad, in the southern Yemeni province of Abyan May 23, 2014. Yemeni forces have faced a wave of hit-and-run attacks by al Qaeda insurgents since the army captured their strongholds in al-Mahfad in Abyan province and in Mayfa’a, Azzan and Gol al-Rayda in Shabwa province earlier this month. Picture taken May 23, 2014. REUTERS/Khaled Abdullah (YEMEN – Tags: POLITICS MILITARY CIVIL UNREST)