GENEVA - As U.S. President Joe Biden and Russian President Vladimir Putin took part in their highly anticipated summit Wednesday in Geneva, what does success look like for a meeting that both sides have downplayed from the start?

Both sides have highlighted opportunities for cooperation but neither expected much improvement in tense relations between Moscow and Washington. The meeting was set up to be more of an airing of grievances than a platform to reach significant agreements.

What Does Success Look Like in Biden-Putin Summit?

"We're not expecting a big set of deliverables out of this meeting," said a senior administration official, briefing VOA and other reporters on board Air Force One during Biden's flight to Switzerland.

What Does Success Look Like in Biden-Putin Summit?

The official said Biden's goals include seeking areas where the United States and Russia can work together while clearly stating U.S. vital national interests and making it clear that "Russian activities that run counter to those interests will be met with a response." He also aims to lay out his "vision for American values and our national priorities."

What Does Success Look Like in Biden-Putin Summit?

"The meeting has a low bar," said Leslie Vinjamuri, director of the U.S. and Americas Program at Chatham House. It isn't aiming for a "reset" of the relationship, Vinjamuri added, something that many American presidents prior to Biden have attempted.

Vinjamuri added that if, following the summit, Biden can tell the American people that he has drawn red lines on interference in U.S. democracy, has called out Putin on cyberattacks, and underscored NATO's commitment to deterring Russia's aggression, the Biden administration will call that success.

On the other hand, Putin will likely brand the summit as a success just by playing the role of the statesman on the world's largest stage, said Cyrus Newlin, associate fellow with the Europe, Russia, and Eurasia Program at the Center for Strategic and International Studies. Russian state media have highlighted the fact that Biden is meeting Putin before Chinese President Xi Jinping or any other U.S. adversary.

Whether or not the summit comes out as a net positive for Biden can only be determined in the ensuing months β€” will Biden communicate his red lines and will Putin respect them, Newlin said.

"Does Russia tone down its cyberattacks? Does Russia cease its provocations in the Black Sea and along Ukraine's border?" Newlin asked. "The failure of the U.S. to secure these basic changes in Russian behavior would illustrate that summits do have costs."

Republicans have slammed Biden for rewarding Putin with a meeting without pre-conditions, a criticism rejected by the White House.

Earlier this month Ukrainian President Volodymyr Zelenskiy said Russia has maintained a massive military presence near his country's borders, having withdrawn only a fraction of the 100,000 troops deployed in April. The buildup is a concern for the West and would be brought up by Biden in his discussion with Putin, the senior administration official said.

Ukraine's ascension into NATO will be another key red line β€” a difficult problem to manage according to Timothy Frye, Columbia University Professor of Post-Soviet Politics and Author of "Weak Strongman: The Limits of Power in Putin's Russia."

"Putin will insist on no NATO membership for Ukraine, while the U.S. will insist on Ukraine's right to choose its foreign policy," Frye said.

Following Biden's summit with NATO leaders Monday, Zelenskiy tweeted that NATO agreed that his country could join the alliance, causing some analysts to speculate that Putin might cancel his Wednesday summit with Biden.

Commend partners' understanding of all the risks and challenges we face. NATO leaders confirmed that πŸ‡ΊπŸ‡¦ will become a member of the Alliance & the is an integral part of the membership process. πŸ‡ΊπŸ‡¦ deserves due appreciation of its role in ensuring Euro-Atlantic security

Asked during his press conference at the end of his summit whether Ukraine should join NATO, Biden said, "It depends on whether they meet the criteria."

"The fact is they still have to clean up corruption. They still have to meet other criteria. School's out on that question, it remains to be seen," Biden said.

But Biden defended Ukraine against Russia. "We will do all that we can to put Ukraine in the position to be able to continue to resist Russian physical aggression," he said.

The Biden administration has stated that their goal is to achieve a stable and predictable relationship with Moscow.

"In Biden-speak, a stable and predictable relationship does not mean even a limited partnership, but is confined to managing a largely adversarial relationship," Columbia University's Frye said.