U.S. special envoy Jared Kushner said Monday that Hamas leaders “said all the right things” during a rare face-to-face meeting Sunday in Cairo to advance President Donald Trump’s Gaza peace plan, but warned it remains very difficult to trust a terrorist organization that committed “terrible atrocities.”

“They said all the right things, but obviously, it’s very, very hard to trust… We had a very cordial meeting, and they said all the right things, and so we’re going to give them a chance to perform. It’s going to have to be based on actions and steps, and I hope it will be true,” Kushner told Fox News chief foreign correspondent Trey Yingst.

A day after meeting Hamas officials, Kushner held nearly four hours of talks in Tel Aviv with Israeli Prime Minister Benjamin Netanyahu to address Israeli concerns over the postwar roadmap. “I think today we had a very, very good meeting… There were some valid concerns that they raised that we were able to address, and we were able to go through some of the misunderstandings and misinformation,” he said.

Kushner made clear that “we will not allow Gaza to be rebuilt until the demilitarization occurs” and that the U.S. will not restrict Israel’s right to defend itself against any imminent threats. He added that progress toward removing weapons could begin in as little as 30 days, with work on filling in tunnels potentially starting in the next 60 to 90 days.

“For Israel, we think this is a win-win situation because if Hamas actually gives over the weapons and the tunnels willingly over the next 60 to 90 days, that obviously would be the elimination of a huge security threat for Israel, almost an unthinkable achievement. If they don’t follow through now on their commitment, everyone will see that they’re not genuine about peace, and then Israel will have a lot more support from the U.S. and others to go and finish the job in the appropriate way,” Kushner concluded.