Donald Trump, J.D. Vance and Volodymyr Zelensky got into an explosive shouting match in the middle of the Oval Office … and, it wasn’t behind closed doors, but in front of the press.

The Ukrainian President met with POTUS and the Veep at the White House Friday … and, while discussing Ukraine’s ongoing war with Russia, the conversation took a heated turn unlike any ever seen in modern American politics.

J.D. Vance said Zelensky was being “disrespectful” by trying to litigate foreign affairs issues in front of the American people … before saying Zelensky should be thanking President Trump for trying to bring an end to the conflict.

While Trump remains quiet for much of this confrontation, he chimes in after Zelensky says the oceans surrounding America will only protect the country for so long — and, eventually, they will feel the pain of this conflict.

DJT goes off on VZ, even making contact with his arm at one point — telling the Ukrainian prez he has no idea what America will feel … and, he explains his admin is simply trying to solve a problem in the region.

Trump tells Zelensky his country isn’t in a good position … blasting him ’cause he’s not holding any of the cards — and he needs America to strengthen his metaphorical hand.

President Trump then adds, “You are gambling with the lives of millions of people. You are gambling with World War 3.”

Vance then demands Zelensky thank the president for all he’s doing for Ukraine … and, while Zelensky says he’s grateful, he doesn’t end up thanking POTUS specifically.

In a video going viral online, the Ukrainian ambassador can be seen looking exhausted … rubbing the bridge of her nose in a candid moment.