Senator Al Franken (D-Minn.) said if the US pulls out of the Iran nuclear deal, it will undercut Washington's leadership role in the world as well as hurt the US's credibility going forward, The Hill reported.

"Our European allies, Russia, China, are not going to pull out so it will just leave us isolated. It undercuts our leadership in the world and, boy, with North Korea, this doesn't help," Franken told host Kasie Hunt on MSNBC's "Kasie DC."

"What kind of message does that send, that we abrogate every treaty that we sign, whether it's Paris or this? Or every agreement? This just undermines our nation as a leader," he continued.

Franken defended the Obama-era nuclear agreement, saying it helped keep Tehran from getting its hands on a nuclear weapon.