British Prime Minister Theresa May said Iran is holding up its end of the nuclear pact that the U.S. withdrew from earlier this year.

"We believe that that should stay in place, and others involved in putting that deal together believe that it should stay in place," May said in an interview aired Sunday on CBS's "Face the Nation."

"We do agree with the United States that there are other aspects of Iran's behavior that we need to be dealing with, too. So looking at the issue of ballistic missiles, looking at the way in which Iran is acting in the region to destabilize the region, we need to address those issues, too," she continued.

ADVERTISEMENT

"But we also want to ensure that we have a nuclear deal in place that prevents them from getting a nuclear weapon," May added.

Tensions between the U.S. and Iran have been heightened in the months since the Trump administration withdrew from the Obama-era Iran nuclear deal, which offered Tehran sanctions relief in exchange for abandoning its nuclear program. Trump had decried the pact as the "worst deal ever."

The U.S. has since reimposed some of the sanctions lifted in the deal, potentially crippling the Iranian economy.

Other signatories of the 2015 agreement — including the United Kingdom, France, Germany, the European Union, Russia and Iran — have pledged to remain committed to the deal.

The U.S. has suggested countries that continue to do business with Iran, such as the United Kingdom, could face sanctions.