
NEW YORK, UNITED STATES - DECEMBER 13: People light candles and hold posters next to Russian Federation consulate general, during a demonstration to protest Assad regime forces' and its supporters' attacks on civilians and the humanitarian plight in Aleppo, on December 13, 2016 in New York, United States. ( Mohammed Elshamy - Anadolu Agency )

LONDON, UNITED KINGDOM - DECEMBER 13: A group of people hold banners as they gather outside the entrance to Downing Street in London, as they protest Assad regime forces' and its supporters' attacks on civilians and the humanitarian plight in Aleppo, on December 13, 2016 in London, United Kingdom. ( Sara Firth - Anadolu Agency )

LONDON, UNITED KINGDOM - DECEMBER 13: A group of people gathered in front of the Syrian embassy in London, as they protest Assad regime forces' and its supporters' attacks on civilians and the humanitarian plight in Aleppo, on December 13, 2016 in London, United Kingdom. ( Tayfun Salcı - Anadolu Agency )

LONDON, UNITED KINGDOM - DECEMBER 13: A group of people gathered in front of the Syrian embassy in London, as they protest Assad regime forces' and its supporters' attacks on civilians and the humanitarian plight in Aleppo, on December 13, 2016 in London, United Kingdom. Some Turkish people participate the demonstration. ( Tayfun Salcı - Anadolu Agency )

LONDON, UNITED KINGDOM - DECEMBER 13: A group of people gathered in front of the Syrian embassy in London, as they protest Assad regime forces' and its supporters' attacks on civilians and the humanitarian plight in Aleppo, on December 13, 2016 in London, United Kingdom. ( Tayfun Salcı - Anadolu Agency )

ISTANBUL, TURKEY - DECEMBER 13: A group of people gathered in front of Galataray High School march towards the Russian consulate general at Istiklal Avenue as they protest Assad regime forces' and its supporters' attacks on civilians and the humanitarian plight in Aleppo, on December 13, 2016 in Istanbul, Turkey. ( Muhammed Enes Yıldırım - Anadolu Agency )