38 military of the Syrian army were killed on Thursday in an explosion in Aleppo, reported, citing its sources, the London-based non-governmental organization Observatory on human rights in Syria. The armed opposition group "Tabr al-sham" dug a tunnel under the former building of the traffic police of Aleppo, used by the forces of Bashar al-Assad. The group posted a video on YouTube of its members, laying in the tunnel with explosives, and the building, soaring into the air among the smoke. The last four years Aleppo, the second largest city of Syria, divided roughly in half: the Western part is in control of Damascus, East of his opponents. Government troops backed by Russian aircraft in recent weeks have escalated their crackdown on their opponents in Aleppo surrounded and controlled those areas in 6.* the city , where they will remain and suffer distress tens of thousands of civilians.