Syrian civil war: Five hundred members of the Syrian Democratic Forces (SDF) are airlifted south of the Euphrates by United States Air Force helicopters, beginning the Battle of Tabqa.

The Syrian civil war was an armed conflict that began with the Syrian revolution in March 2011, when popular discontent with the Ba'athist regime ruled by Bashar al-Assad triggered large-scale protests and pro-democracy rallies across Syria, as part of the wider Arab Spring. The Assad regime…