American Eric Harroun threatened Bashar Assad on Facebook and YouTube. He spent six weeks fighting with a rebel army, a journey that did not end well for him. ABC News/YouTube hide caption

itoggle caption ABC News/YouTube

Islamist fighters in the Libya Dawn coalition guard the entrance of the Tripoli International Airport on Sunday. After days of battles, they captured it from forces aligned with rogue general Khalifa Hifter. Mahmud Turkia/AFP/Getty Images hide caption

itoggle caption Mahmud Turkia/AFP/Getty Images

This image is from the Facebook page of the now-renamed 3 Thirty Three Downtown. The project in West Palm Beach, Fla., was previously called ISIS Downtown. 3 Thirty Three Downtown/Facebook hide caption

itoggle caption 3 Thirty Three Downtown/Facebook

An airplane damaged by shelling at Tripoli International Airport on Saturday. Unidentified warplanes attacked targets in Libya's capital, Tripoli, on Sunday, residents said, hours after forces from the city of Misrata said they had seized the main airport. Reuters/Landov hide caption

itoggle caption Reuters/Landov

Palestinian boys at a damaged building in Rafah, the Gaza Strip, on Thursday. U.S. attempts to broker a comprehensive peace deal have again been shelved as Israel and Hamas have waged their third round of heavy fighting in Gaza in the past six years. Ibrahim Khatib/Barcroft Media/Landov hide caption

itoggle caption Ibrahim Khatib/Barcroft Media/Landov