A Pleiades Satellite image from September 20, 2015, shows Russian fighter jets and helicopters at a military base in the government-controlled coastal Syrian city of Latakia. Syria said on September 22, 2015 it had received sophisticated new arms from Russia, including warplanes, and used them against rebels, as signs grew of a major shift in the country's four-year conflict. AFP

Even in defeat, Syrian rebels say their armed struggle offers hope for Ukraine