Republicans are raising alarms about a possible breakthrough to restart the Iran nuclear deal, amid reports that the U.S. and Iran are coming close to restoring the 2015 nuclear agreement.

Negotiations have been ongoing in Vienna for the United States to rejoin the international deal that President Trump pulled out of in 2018. Britain, France, Germany, Russia and China are still part of the deal with Iran and have been trying to salvage it.

Republicans have long been skeptical of the Iran nuclear deal, but say the timing for any restart is particularly troubling given Russia’s involvement during its ongoing invasion of Ukraine.

“Russia should not be at any table with us right now,” Rep. Brian Fitzpatrick, R-Pa., told Fox News Digital, adding that he’s “very concerned” about a new deal. “They’re committing egregious acts of terrorism and murder in a free democracy in Ukraine, in Europe right now.”