FILE - In this Dec. 22, 2017 file photo, masked members of the Palestinian Al-Quds Brigades, the military wing of the Islamic Jihad group, march with their rifles during a protest against U.S. President Donald Trump's decision to recognize Jerusalem as Israel's capital, in Nusseirat refugee camp, central Gaza Strip. From Lebanon and Syria to Iraq, Yemen, and the Gaza Strip, Iran has significantly expanded its footprint over the past decade, finding and developing powerful allies in conflict-ravaged countries across the Middle East. (AP Photo/Adel Hana, File)