Travelers check the flight schedule screens for delays or cancellations, at the departure terminal of Rafik Hariri international airport in the Lebanese capital, Beirut, on November 21, 2015. Russia has bombed the Islamic State group in the heaviest strikes in eastern Syria since the war began, as Moscow's military manoeuvres in the Mediterranean forced Lebanon to reroute flights. AFP PHOTO / ANWAR AMRO / AFP PHOTO / ANWAR AMRO