Syria's War: Tracking the Descent Into Horror

In the seven years since protesters in Syria first demonstrated against the four-decade rule of the Assad family, hundreds of thousands of Syrians have been killed and some twelve million people—more than half the country's pre-war population—have been displaced. The country has descended into an ever-more-complex civil war: Jihadis promoting a Sunni theocracy eclipsed many opposition forces fighting for a democratic and pluralistic Syria. Regional powers backed various local forces to advance their geopolitical interests on Syrian battlefields. The United States has been at the fore of a coalition conducting air strikes on the self-proclaimed Islamic State, while Turkey, a U.S. ally, has invaded in part to prevent Kurdish forces, the United States' main local partner in the fight against the Islamic State, from linking up their autonomous cantons. Russia too has carried out air strikes in Syria, coming to the Assad regime's defense, while Iranian forces and their Hezbollah allies have done the same on the ground.