President Trump acknowledged on Thursday that there was a significant risk that Israel could soon attack Iran, but he said that “I don’t want them going in” at a moment when progress was being made toward an agreement to shut down Iran’s easiest pathway to building a nuclear weapon.

If there is military action by Israel against Iran, it would be conducted without U.S. miliatry support, sources said. But American intelligence assistance could be provided.

As tensions rise in the Middle East, the Trump administration works on a diplomatic solution to Iran’s nuclear program as Israel prepares to attack.