This question is an exact duplicate of:
My Apple News Feed blew up regarding the missile strike on the Syrian airbase in response to the "Chemical Weapon Attack" - which I put in quotes because while all the major news outlets in my news feed reported it as such, it seemed odd that they would attack civilians with chemical weapons ramdomly - then I saw a claim that the Russian government said Syria's airstrike was not chemical - instead that they targeted a terrorist warehouse which happenned to have chemical weapons inside.
What's the real story? The mainstream media's angle: Syria launches chemical weapons attack on civilians? Or Russia's alleged claim: Syria launches missile strike on warehouse which happens to contain chemical weapons?