By Lefteris Karagiannopoulos and Alkis Konstantinidis KOS, Greece (Reuters) - Mohammed Ibrahim fled fighting in Afghanistan for a better life in Germany but found himself trapped in a derelict hotel on the Greek island of Kos. "All we do here is wait," the 18-year-old said at the abandoned Captain Elias hotel, a two-storey building with a crumbling exterior where hundreds of migrants fleeing conflict and poverty in the Middle East and Asia have found temporary refuge. Allah willing, we will reach Germany," he said.