The Trump administration’s pullbacks on the Iran nuclear and Paris climate deals will make it harder for other countries to take the U.S. seriously on a range of topics, former Energy Secretary Ernest Moniz said Wednesday in Washington.

Trump’s announcements have “challenged the cohesion of the U.S. and its allies,” he said. “If we aren’t going to follow agreements … from Paris to Iran … it’s kind of like, what’s the point,” Moniz said, speaking at the Bipartisan Policy Center think tank. European allies are not “walking with us,” he added.