In a surprisingly open interview with Fox News on Thursday, Israeli Defense Minister Benny Gantz said that Israel’s military is updating its operational plans for a potential future strike against Iranian nuclear sites.

Gantz’s interview with American television comes as Washington seems intent on resuming negotiations on the 2015 Iran nuclear deal, known as the Joint Comprehensive Plan of Action, or JCPOA. Most of the Israeli government, including Prime Minister Benjamin Netanyahu, have opposed the deal, saying it doesn’t stop the Islamic Republic from getting nuclear weapons, something the Israelis have vowed to never allow to happen.

As for the JCPOA, on Thursday, Iranian Foreign Minister Mohammad Javad Zarif said the 2015 nuclear deal “cannot be renegotiated — period.”

“Let’s stop posturing,” he posted on Twitter “which we both did from 2003-2012 to no avail — and get down to implementing [the deal] which we both actually signed on to.”