WASHINGTON (AP) — The head of the U.N.'s nuclear watchdog warned Wednesday that the agency is not yet satisfied with Iran's cooperation with international inspectors, just as European leaders appeared poised to reimpose sanctions on Tehran after a series of last-minute meetings failed to reach a diplomatic resolution on its nuclear program.

Despite Iran allowing inspectors back in for the first time since the 12-day Iran-Israel war in June, regaining access to crucial nuclear facilities is still "a work in progress,” Rafael Grossi, director general of the International Atomic Energy Agency, told The Associated Press.

“I can say that it is important that the inspectors are back,” Grossi said in an interview. “At the same time, we still need to clarify a number of things, and we still need

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