Iran appeared to reopen its airspace on Thursday after a sudden overnight closure disrupted flights across the region, even as airlines largely continued to avoid the country amid heightened security warnings and ongoing regional tensions. 

The overnight closure lasted around five hours after a Notice to Air Missions, or NOTAM, Donald Trump told reporters in the Oval Office on Wednesday that he was informed the killing of protesters in Iran was "stopping."

"We have been notified and really strongly, but we'll find out what that all means. But, we've been told that the killing in Iran is stopping," he said.

Sen. Lindsey Graham, R-S.C., disagreed with Trump, writing on X that every indication he’s seen shows that the Iranian regime’s killing of anti-government protesters is "still very much in full swing."

"The death toll is mounting by the hour. Hoping that help is on the way," he wrote.

The U.S.-based Human Rights Activists News Agency (HRANA), threatened action against the regime, warning Tehran in multiple Truth Social posts to stop killing its people.

"We are locked and loaded and ready to go," he wrote on New Year’s Day.

The president said on Tuesday that he had canceled all meetings with Iranian officials and called on protesters to "TAKE OVER YOUR INSTITUTIONS!!!"

"Save the names of the killers and abusers. They will pay a big price," Trump wrote, adding, "HELP IS ON ITS WAY."