Ukrainian President Volodymyr Zelensky’s visit to the White House on Thursday could be his final chance to convince a receptive American president of his country’s war aims.

The precise details of the “victory plan” Zelensky plans to present in separate meetings to President Joe Biden and Vice President Kamala Harris are unknown, having been closely held until they are presented to the American leaders.

But according to people briefed on its broad contours, the plan reflects the Ukrainian leader’s urgent appeals for more immediate help countering Russia’s invasion. Zelensky is also poised to push for long-term security guarantees that could withstand changes in American leadership ahead of what is widely expected to be a close presidential election between Harris and former President Donald Trump.

The plan, people familiar with it said, acts as Zelensky’s response to growing war weariness even among his staunchest of western allies. It will make the case that Ukraine can still win — and does not need to cede Russian-seized territory for the fighting to end — if enough assistance is rushed in.

That includes again asking permission to fire Western provided long-range weapons deeper into Russian territory, a line Biden once was loathe to cross but which he’s recently appeared more open to as he has come under growing pressure to relent.

Even if Biden decides to allow the long-range fires, it’s unclear whether the change in policy would be announced publicly.

Biden is usually apt to take his time making decisions about providing Ukraine new capabilities. But with November’s election potentially portending a major change in American approach to the war if Trump were to win, Ukrainian officials — and many American ones — believe there is little time to waste.

Trump has claimed he will be able to “settle” the war upon taking office and has suggested he’ll end US support for Kyiv’s war effort.

“Those cities are gone, they’re gone, and we continue to give billions of dollars to a man who refused to make a deal, Zelensky. There was no deal that he could have made that wouldn’t have been better than the situation you have right now. You have a country that has been obliterated, not possible to be rebuilt,” Trump said during a campaign speech in Mint Hill, North Carolina, on Wednesday.

Comments like those have lent new weight to Thursday’s Oval Office talks, according to American and European officials, who have described an imperative to surge assistance to Ukraine while Biden is still in office.

As part of Zelensky’s visit, the US is expected to announce a major new security package, thought it will likely delay the shipping of the equipment due to inventory shortages, CNN previously reported according to two US officials. On Wednesday, the US announced a package of $375 million.

The president previewed Zelensky’s visit to the White House a day beforehand, declaring on the margins of the United Nations General Assembly his administration was “determined to ensure that Ukraine has what it needs to prevail in fight for survival.”

“Tomorrow, I will announce a series of actions to accelerate support for Ukraine’s military – but we know Ukraine’s future victory is about more than what happens on the battlefield, it’s also about what Ukrainians do make the most of a free and independent future, which so many have sacrificed so much for,” he said.

Anxiety over the future of American support has colored many of Zelensky’s visits to Washington. When he visited the White House last year, it was meant in part to apply pressure on Republican Congressional leaders to approve billions of dollars in new assistance.

The aid was eventually passed, but support for Ukraine among allies of Trump is not high. While Zelensky will visit Capitol Hill on Thursday, he won’t meet Republican House Speaker Mike Johnson.

“This war has ground away at Russia’s basic vitality. If you look at the sheer number of casualties killed and wounded among the Russians, a million Russians leaving the country, yes, their war machine is cranking, but their economy is getting hollowed out,” US national security adviser Jake Sullivan said on MSNBC this week. “So I do believe over time, whether it’s Putin or the people around him, they will see the futility in continuing to try to drive at this. It’s incumbent on us to help hasten that day.”

Looking to develop relationship with Harris

Zelensky’s separate meeting with Harris on Thursday – set to take place after the Ukrainian leader has wrapped up with Biden – signals his desire to further develop what would be his most important leader-to-leader relationship should she win.

In the weeks since taking the political baton from Biden, Harris and her aides have gone to great lengths to insist that on major matters of foreign policy, there is no daylight between the vice president and the outgoing president.

The ongoing war between Ukraine and Russia is no exception, they say, insisting that Ukraine would continue to have the US’s unwavering support against Russian aggression under a Harris presidency.

The vice president’s face time with Zelensky on Thursday would mark their sixth meeting since the war broke out in February of 2022. Just several days prior to the start of Russian attacks in February 2022, the vice president also saw Zelensky at the Munich Security Conference, where the two discussed Russia’s military build-up around Ukraine and the possibility of the start of a war.

In her remarks at the Democratic National Convention last month, Harris was deliberate in taking credit for the US’s response.

“Five days before Russia attacked Ukraine, I met with President Zelensky to warn him about Russia’s plan to invade. I helped mobilize a global response – over 50 countries – to defend against Putin’s aggression,” she said. “And as president, I will stand strong with Ukraine and our NATO allies.”

Advisers to the vice president say Trump’s public statements about the war in Ukraine could not make more clear the starkly different foreign policy worldviews of the vice president and the former president. (Trump appears unlikely to sit down with the Ukrainian leader, despite saying last week they would “probably” meet.)

Trump’s campaign has been blasting Zelensky over an interview with the New Yorker published Sunday in which Zelensky called vice presidential nominee JD Vance “too radical.”

“His message seems to be that Ukraine must make a sacrifice. This brings us back to the question of the cost and who shoulders it. The idea that the world should end this war at Ukraine’s expense is unacceptable,” Zelensky said in the interview. “For us, these are dangerous signals, coming as they do from a potential Vice-President.”

Trump alluded to the comments in North Carolina on Wednesday.

“The President of Ukraine is in our country. He’s making nasty little aspersions toward your favorite president, me,” he said.

There is quiet recognition even inside the Biden administration that any reassurances Zelensky may receive from Biden and Harris this week on the US’s commitment to supporting Ukraine could all be for naught under a different American president.

At the signing of a new US-Ukraine defense pact on the sidelines of the G7 meeting in Italy in June, Zelensky was asked what contingency plan he might have for precisely such a scenario.

“If the people are with us, any leader will be with us in this struggle for freedom,” Zelensky responded.