Al-Qaeda claimed responsibility on Wednesday for a suicide attack on a presidential palace in southeast Yemen that had killed 26 Republican Guards over the weekend, in a statement released on jihadist forums. \"The hero martyr Abu Muhjen al-Saghiri attacked with his bomb-laden car Republican Guard troops inside the presidential palace in Mukalla, Hadramawt\'s capital, killing nearly 30 officers and soldiers and wounding more than 50,\" said the statement.