Only days after the latest ceasefire agreement came into force in Syria, a United Nations aid convoy en route to Aleppo was attacked and destroyed.
The UN was quick to declare this both a premeditated attack and a war crime. Citing air space intelligence, the US government released a statement accusing the Russian Air Force of responsibility, detailing the presence of two Russian Sukhoi SU-24 fighter aircraft in the area at the time of the attack.