Still image taken from video shows a cloud of smoke in the sky after an explosion at what Syrian state television reported was a military research centre in Damascus

 
Still image taken from video shows a cloud of smoke in the sky after an explosion at what Syrian state television reported was a military research centre in Damascus
A cloud of smoke is seen in the sky after an explosion at what Syrian state television reported was a military research centre in Damascus, in this still image taken from video obtained from a social media website by Reuters on May 5, 2013. REUTERS/Social Media/Handout via Reuters TV