More than 10,000 Islamic State militants have been killed since an international coalition launched a campaign against the group nine months ago in Iraq and Syria, a U.S. official said Wednesday. Speaking on France Inter radio in Paris, U.S. Deputy Secretary of State Antony Blinken said there had been a lot of progress but the militant group remained resilient. The coalition of Western and Arab countries on Tuesday backed Iraq’s strategy to retake terrority including Ramadi, the capital city of Iraq’s largest province. “At the start of this campaign [we] said it would take time,” Blinken said. “We have conceived a three-year plan and we’re nine months into it.”