The Al-Qaeda-linked militant group Al-Shabab claimed an attack that killed three Emirati troops and a Bahraini military officer on a training mission at a military base in the Somali capital, authorities said Sunday. The attack Saturday targeted the troops at the General Gordon Military Base in Mogadishu. Details about the attack and whether it killed others remained scarce Sunday, though Somali President Hassan Sheikh Mohamud offered his condolences to the UAE for the loss of its troops in the assault. Early Sunday, the UAE’s state-run WAM news agency reported the killing of three of its troo…