WASHINGTON, March 11 (TASS) - Sending offensive vehicles, planes and tanks with American soldiers to Ukraine would become a beginning of World War III, US President Joe Biden told US Congress Democrats Friday.

Speaking in Philadelphia, Pennsylvania, Biden touched upon shipment of weapons to Ukraine, which his party members urge him to do.

"We are showing our strength and we will never falter. But look, the idea that we’re gonna send an offensive equipment, and have tanks, and planes and trains going in with American pilots and American crews - just understand, don’t kid yourself, no matter what you all say, that’s called World War III. Okay? Let’s get it straight here," the head of state said.