Ukraine President Volodimir Zelenski said on Friday that thousands of troops could grow in his country as part of the security guarantees proposed by the Allies as soon as the war with Russia ended.

French President Emmanuel Macron said on Thursday that 26 countries were pledged to provide security guarantees to Ukraine after the war, including an international power, sea and air force.

Although Macron initially said that these countries would develop troops in Ukraine, he later clarified that some would provide guarantees by staying outside the country, for example, contributing to the education and equipment of the Ukrainian forces.

“It is important that we are discussing all this … There will certainly be thousands, not only a few,” Zelenski said after meeting with European Council President Antonio Costa in Western Ukraine. He pointed out, in response to a journalist’s question, that it is still too early to comment on details.

However, Russian President Vladimir Putin warned on Friday that any Western troops are deployed in Ukraine will be legal targets for Moscow attack.

In Ouzhod, Zelenski said that the meeting with Costa coordinated the next steps for Ukraine’s accession course in the EU, stressing that joining the Union is critical to the country’s security and recovery after the war.

The Ukrainian president was also to meet with Slovak Prime Minister Robert Fitso. Deputy Energy Minister Roman Adrak told Copenhagen that Zelenski is expected to discuss with Fitso the gradual abolition of Russian oil traditions through Ukraine.

Slovakia depends largely on the Russian oil transported through the Druzba pipeline, whose infrastructure has repeatedly attacked Ukrainian drones, causing frequent holidays that angered Bratislava.

Fitso met Putin on Tuesday in Beijing and said Slovakia wants to normalize her relationship with Moscow.

Ukraine has called on other countries to stop buying Russian oil to deprive Moscow revenue for war financing.

According to a US official, US President Donald Trump told European leaders on Thursday that they should stop Russian oil markets.