The death toll from twin bomb blasts that struck busy junctions in the heart of Somalia’s capital, Mogadishu, has reportedly soared to more than 200. It is one of the deadliest attacks since an Islamist insurgency began in 2007. UPDATE: Bomb attack in Mogadishu kills at least 231, Somali senator says https://t.co/neMIZWdyvL— NBC News (@NBCNews) 15…