Donald J. Trump

Former President

He says the war is not a vital U.S. interest.

Former President Donald J. Trump has said that the war “must end” but that “this fight is far more important for Europe than it is for the U.S.”

Nikki Haley

Former Governor of South Carolina Dropped out

She says Biden hasn’t done enough, but has said little about what she would do differently.

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I don’t think we should be sending Ukraine money.

I don’t think, I don’t think we need to put troops

on the ground.

But what we do need to do is get with our allies,

and make sure they have the equipment and the ammunition

they need to win because if Ukraine wins this war,

it will send a message to China and Taiwan.

It will send a message to North Korea

testing ballistic missiles.

It will send a message to Iran.

Ron DeSantis

Governor of Florida Dropped out

He says the war is not a vital U.S. interest, but backtracked on calling it a “territorial dispute.”

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In Europe,

what I would say is with NATO, NATO needs to do more.

These countries, they need to produce adequate amount

for their own defense, and they should really

be taking the lead in ensuring the security

of the continent.

So I would rely on them to be taking up that mantle.

And I think that that’s something that’s very,

very important.

Vivek Ramaswamy

Entrepreneur Dropped out

He opposes military aid and wants Ukraine to concede territory in exchange for Russia breaking with China.

“I don’t think it is preferable for Russia to be able to invade a sovereign country that is its neighbor, but I think the job of the U.S. president is to look after American interests, and what I think the No. 1 threat to the U.S. military is right now, our top military threat, is the Sino-Russian alliance.”

Asa Hutchinson

Former Governor of Arkansas Dropped out

He supports military aid with audits to ensure funds are used as intended.

Former Gov. Asa Hutchinson of Arkansas told C-SPAN that U.S. leadership was “important in supporting Ukraine and bringing the European allies together” against Russia, and that he disagreed with Mr. Trump’s and Mr. DeSantis’s more “isolationist view.”

Chris Christie

Former Governor of New Jersey Dropped out

He is one of only two candidates to have visited Ukraine, and he supports military aid.

Former Gov. Chris Christie of New Jersey — who visited Ukraine in August, becoming only the second Republican candidate to do so, after Mr. Pence — has said that the United States should continue to support Ukraine until the war is “resolved.”

Doug Burgum

Governor of North Dakota Dropped out

He supports military aid with audits to ensure funds are used as intended.

“Russia cannot have a win coming out of this, because if it’s a win for them, it’s a win for China,” Gov. Doug Burgum of North Dakota told KFYR, a television station in the state, while adding that he wanted Europe to shoulder more of the financial burden. He also wants “accountability on every dollar” spent.

Tim Scott

Senator from South Carolina Dropped out

He supports military aid and says Biden hasn’t done enough, but he also called for “accountability” before sending more aid.

Senator Tim Scott of South Carolina told NBC News that Mr. Biden had “done a terrible job explaining and articulating to the American people” what the United States’ interests are there.

Mike Pence

Former Vice President Dropped out

He is one of only two candidates to have visited Ukraine, and he supports military aid.

Former Vice President Mike Pence has accused Mr. Biden of not supplying aid quickly enough, though his campaign did not respond to a request for more specifics on how his policy would differ. In June, he was the first Republican candidate to travel to Ukraine, where he met with President Volodymyr Zelensky.

Will Hurd

Former United States Representative Dropped out

He is the only candidate who wants to go beyond military aid by establishing a no-fly zone.

Former Representative Will Hurd of Texas — who said from the start that the United States should send Ukraine “as much weaponry as we can” — has espoused a more hawkish policy than any other major candidate, arguing that the United States should go well beyond providing equipment and weapons.