The leaders of Turkey, Russia, France, and Germany have reiterated calls for a UN-backed political process to end the war in Syria that has killed hundreds of thousands of people.German Chancellor Angela Merkel said after a summit in Istanbul on October 27 that "the meeting demonstrated there is common determination to solve the problem."A joint solution can be achieved, not through military means, but only through political effort under the UN aegis," she added.Along with Merkel, Russian President Vladimir Putin, Turkish President Recep Tayyip Erdogan, and French President Emmanuel Macron gathered for the talks in search of an end to...