By way of Khaled Yacoub Oweis and Dominic Evans AMMAN/ARSAL, Lebanon (Reuters) – President Bashar al-Assad’s forces fired rocket and artillery barrages on a besieged mountain city close to Lebanon on Monday in a push to seize the strategic house following advances towards rebels in Damascus and in the north of Syria. In a separate setback for the fighters, a prominent insurrection chief died overnight in a Turkish sanatorium of wounds suffered in an air raid on Aleppo. Abdelqader Saleh, head of the Qatar-backed Sunni Islamist al-Tawhid Brigades, had been engaged on regrouping fighters in Aleppo earlier than he was once killed.