The last time Achilleas Zavallis packed his camera gear for Syria, he changed his airline ticket twice within 48 hours because he couldn’t make up his mind whether he should go to a country considered the most dangerous place in the world for journalists. His stomach was tied “in a million knots,” he recalled, as it is every time he travels to a war zone. A photographer based in Greece, Zavallis is a freelance journalist. When he goes into danger, it is nearly always “on spec,” freelance parlance for covering a story and then trying to find someone to publish his work. But in November 2013, after changing his ticket and second-guessing his motives and re-assessing the risks, Zavallis went anyway, traveling to northern Syria to document the country’s Christian minority. He stayed for about two weeks. A photo essay from the trip was published three months later in the National, an English-language publication in Abu Dhabi. “I believe that the story must be told,” Zavallis said, “so that no one can come after 100 years and say that in Syria nothing happened and that no one died.”