Shiite groups in Iraq said they attacked a US base in Kurdistan. The Iraqi Islamic Resistance, which includes Shiite militias, said it attacked a US base in Iraqi Kurdistan with two drones. Earlier on Thursday, the formation reported that it had fired rockets at the US military base Al-Shaddadi in northeastern Syria. “Iraqi Islamic Resistance fighters used two drones to attack a base of American occupiers adjacent to Erbil airport,” the group said in a statement. The formations claim that the drones hit their targets. Earlier, media adviser to the Iraqi Prime Minister Hisham al-Rikabi told RIA Novosti that the Iraqi government has tightened measures to protect diplomatic missions and will not allow attacks on foreigners in the country. Earlier, the US Central Command reported that more than 20 American troops were injured in increased attacks on their bases in the Middle East. Militant groups believed to be linked to Iran attacked U.S. troops in Iraq 10 times and three times in Syria as the conflict in the Gaza Strip escalated, according to the Pentagon.