Syrian government forces are on the brink of recapturing the last rebel-held area of what was once the country’s largest city, Aleppo. It’s a major turning point in the brutal six-year civil war.Caught in the middle are 100,000 people who are trapped in besieged areas — and have no way out.Among them is Ammar al Salmo, the Aleppo-area leader of the Syrian Civil Defence volunteers, better known as the White Helmets, an unarmed group aiding civilians in rebel-held territory.He spoke to VICE News about conditions on the ground.