Almost a year after he warned that sending tanks into Ukraine would cause "World War III," President Biden is doing just that -- and Donald Trump isn't letting him forget his broken promise.

In a newly released video, Trump called on Biden to "end this crazy war now" and blasted his decision to send Abrams tanks as a dangerous escalation that risks "nuclear war."

Promise broken

In March, Biden had pushed back on those calling to send heavy equipment like tanks and fighter jets into the conflict zone, saying it could trigger a nuclear war with Russia.

“The idea that we’re going to send in offensive equipment and have planes and tanks and trains going in with American pilots and American crews — just understand, don’t kid yourself, no matter what y’all say, that’s called World War III,” Biden said.

Biden appears to have all but forgotten his past warnings, but President Trump hasn't. 

In a new 2024 campaign video, Trump, who famously rejected Washington's "endless wars" as a presidential candidate and commander-in-chief, chided his rival for bringing the world "to the brink of nuclear war" with his decision last week to send 31 Abrams tanks to Ukraine.

"And now Biden is doing what he said 10 months ago would lead to World War Three," Trump said.

Escalation

Trump said if he were still president, he would negotiate a quick end to the conflict before the worst happens.

"First come the tanks, then come the nukes," Trump said. "Get this crazy war ended now."

Each Abrams tank requires a large and complex convoy of support to function, and the U.S. is going to provide training on how to operate the killing machines, considered some of the deadliest in America's arsenal.

Proxy war?

Biden's reckless management of the conflict hasn't exactly inspired confidence.

His handlers were forced to retract his comments calling for Vladimir Putin to be overthrown during a visit to Poland in March. Biden had also set off alarms by telling American troops stationed in Poland that they were going to Ukraine, despite his promises not to put boots on the ground.

Although Biden has said America isn't going to war with Russia, many have expressed concern about America's open-ended and seemingly escalating commitment to the conflict.

In addition to weapons and training, the U.S. has provided intelligence to help Ukraine's army neutralize Russian targets.

Biden has shot down calls for diplomacy, while pledging support for Ukraine "for as long as it takes."