ISIS fighters entered the ancient Syrian city of Palmyra on Wednesday, putting 2,000-year-old ruins at risk. ISIS has previously destroyed ancient cultural sites in Nimrud and smashed artifacts in a museum in Mosul. The city is also close to oil fields that the terror group has attacked and partially seized. According to the New York Times, “the fact that the Islamic State group…has been able to advance into Palmyra, five days after seizing Ramadi, in the Iraqi province of Anbar, demonstrates its ability to carry out complex operations simultaneously on multiple fronts, in the face of pitched resistance on the ground and from the air.” The fall of Palmyra also means control of a highway that leads to Damascus