White House confirms Zelenskyy's meeting with Biden at Vilnius summit 

This was stated in a briefing by the national security advisor to President Joe Biden, Jake Sullivan.

According to the official, the leaders of the states will meet on Wednesday, July 12. They will talk about long-term support from the US and other allies to help Ukraine defend itself and prevent future attacks.

Sullivan also mentioned that the first Ukraine-NATO Council meeting will take place tomorrow. They will discuss a new aid package, Ukraine's long-term needs, and the expansion of cooperation between Ukraine and NATO.

Additionally, the US president's advisor noted that the allies will talk about Ukraine potentially becoming a NATO member in the future.

According to Sullivan, Joe Biden stated that if Ukraine were to join NATO now, it could lead to a NATO war with Russia. Moreover, Ukraine still needs to make some reforms, but the allies will send a positive message about Ukraine's membership in NATO.

Ukraine's path to NATO membership:

Ukraine hopes to receive clear decisions on joining the Alliance in July during the NATO meeting in Vilnius. On May 23, Ukraine's ambassador to NATO, Natalia Galibarenko, mentioned that Ukraine is preparing two cooperation packages (political and practical), which will be presented for discussion during the upcoming NATO Summit in Vilnius. 

On May 30, Foreign Minister Dmytro Kuleba outlined three key points that define Ukraine's vision for a successful outcome at the NATO summit in Vilnius. "Strengthen Ukraine-NATO institutional ties and assistance. Take a step toward UA membership. Provide security guarantees on Ukraine’s path to NATO." 

On June 10, Ukraine’s Deputy Defense Minister, Volodymyr Havrylov, expressed his belief that the July NATO summit in Vilnius  will set the algorithm for Ukraine's accession to the Alliance.

NATO Secretary General Jens Stoltenberg confirmed that Ukraine will become a NATO member in the future, but due to the ongoing war, specific dates for accession cannot be determined. 

On June 15, the European Parliament adopted a resolution calling for Ukraine's membership in NATO with 425 votes in favor. 

On June 16, Foreign Minister Dmytro Kuleba called on NATO chief Stoltenberg to drop the Membership Action Plan (MAP) if Ukraine joins NATO.

US President Joe Biden expressed support for removing the MAP stage, making the joining process simpler for Ukraine.

President Volodymyr Zelenskyy emphasized Ukraine's role in Europe's defense and called on allies to invite the country to NATO. Zelenskyy stated that Ukraine has valid reasons to receive a political invitation to NATO at the Vilnius summit.

James Cleverly, Secretary of State for Foreign Affairs in the UK, assured support for Ukraine's simplified entry into NATO.

On June 28, during a speech in parliament on Constitution Day, President Zelenskyy proposed 5 points of the Ukrainian Doctrine, which stipulates that Ukraine's future lies in the EU and NATO, for discussion.

On June 30, US Ambassador to NATO Julianne Smith said that NATO member states are close to a consensus on Ukraine's accession to NATO without the MAP.

Turkish President Recep Tayyip Erdogan stated that Ukraine deserves NATO membership, emphasizing that everyone stands to gain from a fair peace.

In an interview with CNN, President of Ukraine Volodymyr Zelenskyy said that an official invitation to join NATO is extremely important for Ukraine. He appealed to US leader Joe Biden to do so.

On July 9, media reported that the United States, the United Kingdom, France, and Germany are negotiating to finalize a declaration on security guarantees for Ukraine on the eve of the NATO summit.On July 10, NATO reached a consensus on the abolition of the MAP for Ukraine.

On July 7, Jens Stoltenberg announced that Zelenskyy will attend the first meeting of the NATO-Ukraine Council in Vilnius.

On July 10, US President Joe Biden arrived in Vilnius, Lithuania, to participate in the summit of the North Atlantic Alliance.

On July 10, Politico said that US President Joe Biden plans to meet with Turkish President Recep Erdogan and Ukrainian President Volodymyr Zelenskyy during the summit in Vilnius.