I saw massacre of children, says defecting Syrian air force officer

Three years ago now, this was the first major massacre of Assad's war against Syria. Assad sent his soldiers door-to-door to massacre Sunni Muslims, with the message that either Bashar stayed in power, or they would burn the country.
The régime lied, said it was the Free Syrian Army's work. And the world watched not sure to believe*. And when the truth became irrefutable, it was said to be just another massacre in a war where atrocities are committed by all sides. This is a pattern that was already well established by the time of Assad's chemical attacks of August 2013, throw sand in the world's face to obscure Assad's responsibility, and then congratulate yourselves for preventing a war by the lack of response. That's been what much of the left, abetted by much of the Western media, has done, and it has enabled Assad to intensify his war, and spread the catastrophe to neighbouring countries. The subtitle of this piece, "As UN envoy warns of all-out war", is in that vein, as if Assad's war to keep himself in power will relent as long as we don't over-react.
*[http://www.spiegel.de/international/world/a-look-back-at-the-houla-massacre-in-syria-a-845854.html]