U.S. special envoy Jared Kushner delivered a stark ultimatum to Hamas on Monday, warning that the terrorist group must honor its commitments to disarm in Gaza or face an Israeli military operation to "finish the job.

"Speaking exclusively to Fox News chief foreign correspondent Trey Yingst, Kushner also detailed high-stakes diplomatic meetings in Egypt and Israel over the last 48 hours aimed at advancing President Donald Trump’s Gaza peace roadmap as fighting and disagreements between Israel and Hamas persists.

Israel has carried out air strikes and seized more territory in Gaza despite an October ceasefire, while Hamas has refused to give up its weapons, Reuters also reported Monday.

Kushner met first with Hamas in Cairo, together with the National Committee, the new technocratic Palestinian government that will take over control. 

Kushner told Yingst that the group reaffirmed its commitment to Trump’s 20-point peace plan and to the "15-point roadmap that we've been working on with them for the last four months, where they commit to giving up their weapons.

"Time will tell whether that's going to be implemented," he added, before stating that Washington feels it could be "very close to knowing, and we're making a lot of progress towards trying to get to the next steps.

"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 also told Yingst of the militant group.

The warning from Trump’s son-in-law followed the rare face-to-face meeting — only Kushner's second known meeting with the group.

"They said all the right things, but obviously, it's very, very hard to trust, you know, a terrorist organization that committed these terrible atrocities," Kushner continued. "But 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.