President Donald Trump has signaled a rampage is in store if Republican senators don't kill the filibuster — and he's "ready to go nuclear," according to a new Axios report Tuesday.

The president has indicated he will make life a "living hell" for GOP loyalists who don't follow his command and posted about it multiple times on his Truth Social platform. He appears to be frustrated with lawmakers and the shutdown. And it's starting to bother him.

"He will make their lives a living hell," a Trump adviser, whose name was not released, told Axios.

"He will call them at three o'clock in the morning. He will blow them up in their districts. He will call them un-American. He will call them old creatures of a dying institution. Believe you me, he's going to make their lives just hell," the source said.

Trump initially thought Democrats would drop their demands and didn't pay much attention to the shutdown, but now, as the stalemate reaches the longest government closure in history, he has changed his tune.

"He's really mad about this," another Trump advisor told Axios.

Trump is reportedly calling out Republican senators for not changing the filibuster rules. A filibuster requires 60 votes for most legislation and Trump argues it gives Democrats the leverage to keep the government closed.

"The more he thinks about it, the more he thinks the filibuster is outrageous and anti-democratic," an advisor said.