Former US President Donald Trump has vowed to settle the conflict between Russia and Ukraine even before his inauguration if he wins the 2024 presidential race.

"Before I even arrive at the Oval Office, shortly after we win the presidency… I will have the horrible war between Russia and Ukraine settled," Trump said on Saturday during a rally in Philadelphia. During his speech, Trump also vowed to prevent World War III.

On Saturday, the former president told NBC News that he had already decided who he would appoint as vice president if he wins. Trump mentioned that this person will "most likely" attend his upcoming debates with US President Joe Biden. "They’ll be there... I think we have a lot of people coming," Trump told NBC News.

Among the most likely candidates for the vice presidency are North Dakota Governor Doug Burgum, Senator James David Vance, and Senator Marco Rubio, as reported by the news broadcaster, citing sources familiar with the selection process.

The US presidential election will be held on November 5.

The main rivals in the race are Joe Biden, a Democrat, and his Republican predecessor, Donald Trump.

Earlier in the week, Trump stated in an interview with the All-In podcast that he understands why Russia would be concerned about NATO troops on its border. He further commented that NATO's expansion eastward was a significant factor contributing to the war in Ukraine.

Trump vowed that if he returned to the White House, he would not deploy US troops on the ground in Ukraine.