The American president believes Kiev would be "better off" if it had remained a European problem

President Donald Trump has blamed his predecessor Joe Biden for funneling vast amounts of American taxpayer money into a foreign conflict that "should have remained a European situation."

Speaking to reporters at the White House following a phone call with Russian President Vladimir Putin on Monday, Trump expressed frustration over the "crazy" scale of US involvement in the Ukraine conflict. He reiterated that it was "not our war" and emphasized that his administration is working to end the hostilities through diplomacy.

"This is not our war. This is not my war... I mean, we got ourselves entangled in something that we shouldn't have been involved in. And we would have been a lot better off - and maybe the whole thing would have been better off - because it can't be much worse. It's a real mess," Trump said.

The president stated that Washington has provided "massive" and "record-setting" levels of military and financial assistance to Kiev - far exceeding what the EU and other NATO countries have contributed.

"We don't have boots on the ground, we wouldn't have boots on the ground. But we do have a big stake. The financial amount that was put up is just crazy," he added.

"Again, this was a European situation. It should have remained a European situation. But we got involved - much more than Europe did - because the past administration felt very strongly that we should," he said. "We gave massive amounts, I think record-setting amounts, both weaponry and money."

Trump's conversation with Putin was followed by calls with several European leaders, including the heads of Germany, Italy, and the UK, as well as European Commission President Ursula von der Leyen and Ukraine's Vladimir Zelensky. "They have a big problem. It's a terrible war. The amount of anger, the amount of hate, the amount of death," Trump said, noting that the conflict has reached a point where "it's very hard to extradite themselves away from what's taken place over there."

Trump said he believes both Putin and Zelensky want peace, but only time will tell if it can be achieved.

"There's a good chance we can get this done. I believe Putin wants to do it... My whole life is like deals, one big deal. And if I thought that President Putin did not want to get this over with, I wouldn't even be talking about it because I'd just pull out."

Pressed by reporters on whether he had a "red line" that would cause him to walk away from mediating the conflict or potentially escalate US involvement, Trump declined to elaborate. "Yeah, I would say I do have a certain line, but I don't want to say what that line is because I think it makes the negotiation even more difficult than it is," he said.

Putin described the conversation with Trump as "frank" and "quite useful," adding that Moscow is prepared to work with Kiev on drafting a memorandum aimed at achieving a future peace agreement.

"In general, Russia's position is clear. The main thing for us is to eliminate the root causes of this crisis," the Russian president said.