The Syrian Air Force has carried out indiscriminate and deliberate air strikes against civilians, Human Rights Watch warned.
The organisation said it documented 59 unlawful attacks in northern Syria, based on visits to 50 sites and interviews with witnesses and victims.
It said that according to a network of local Syrian activists, air strikes have killed more than 4,300 civilians across the country since July 2012.
In village after village, we found a civilian population terrified by their country’s own air force. These illegal air strikes killed and injured many civilians and sowed a path of destruction, fear, and displacement.
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Pc Keith Palmer was on the front line and because of his actions, the Westminster attacker was unable to kill anyone else.