RT News - December 21, 2016 (13:00 MSK)

German police say the terrorist that drove a truck into a crowded Christmas market in Berlin is still at large. Questions are now being raised about security levels and Chancellor Merkel's ability to deal with the threat. Russia, Turkey and Iran pledge to safeguard agreements on Syria, prompting some awkward questions for the US State Department. A blast goes off in Aleppo next to where crowds had gathered for Christmas celebrations.