The Syrian Civil War is arguably the worst humanitarian crisis since the Second World War, with over a quarter million killed, roughly the same number wounded or missing. Syria’s conflict has devolved from peaceful protests against the government in 2011 to a violent insurgency that has drawn in numerous other countries. It’s partly a civil war of government against people; partly a religious war pitting Assad’s minority Alawite sect, aligned with Shiite fighters from Iran and Hezbollah in Lebanon, against Sunni rebel groups; and increasingly a proxy war featuring Russia and Iran against the United States and its allies.
When we say it's complicated, IT IS
The Syrian 'president' Bashar El Assad and Vladimir Putin allying together
Four years ago, after warning Assad that a chemical attack would cross a red line and trigger U.S. action, Obama failed to follow through. Rather than authorizing military action against Assad in response to a syrian gas attack that killed hundreds outside Damascus, Obama opted instead for a Russia-backed agreement to remove Syria's chemical weapons stockpiles.
Recently, warplanes targeted the town of Khan Sheikhoun again,a Rebels-held town according to the Syrian Observatory for Human Rights and the White Helmets. The place that was hit was filled with civilians. It was a residential area, not a military warehouse and many refugees were displaced there after they fled for their lives.
That was seen internationally as a major blow to U.S. credibility and, for Obama's critics, a prime example of weak leadership. Sarian chemical weapons attacks continued after the deal.
The moment the bomb hit, everyone dropped dead
“Yesterday evening we found a whole family in a shelter killed from choking on chlorine gas and today we found another family in a shelter that had also choked to death. We are finding whole families killed,” Abdullah al-Hussein, a Syria Civil Defense volunteer at the scene, said.