Mark N. Katz is a professor of government and politics at George Mason University (Fairfax, Virginia, USA), and is the author of Leaving without Losing: The War on Terror after Iraq and Afghanistan (Johns Hopkins University Press).(CNN) -- As numerous news organizations have reported, Russia has sent two planes so that about 100 of its citizens who want to can leave Syria. Tellingly, the planes were not sent to Damascus where the security situation around the airport has reportedly deteriorated, but to Beirut instead to which the Russians departing Syria traveled by bus.In its characteristic fashion, the Russian government has denied that this is an evacuation. An unnamed Russian diplomat in Damascus, though, did not rule out the possibility of further flights. Russian naval exercises in the Mediterranean may also be the prelude to a seaborne evacuation from the Syrian coast.