MSN reports:

[https://www.msn.com/en-us/news/world/eu-chief-diplomat-on-trumps-responsibility-towards-ukraine-he-promised-to-stop-the-killing/ar-AA1NlPUk]

EU chief diplomat Kaja Kallas has said that Europe does not bear sole responsibility for helping Ukraine end the war with Russia – the United States shares that responsibility.

Source: Kaja Kallas, EU High Representative for Foreign Affairs and Security Policy, as cited by Politico

Details: According to Kallas, it was US President Donald Trump who made a promise to halt the hostilities.

"He was the one who promised to stop the killing," Kallas said. "So it can’t be on us."

Or to put it another way, the USA was one of the co-conspirators behind provoking, provisioning and prolonging the war in Ukraine so the least they can do is help end it.

You made your bed, now lie in it.