European Council chief Charles Michel is "confident" that any issues over a proposed ban on Russian oil imports will be resolved by the next council meeting on May 30.
Addressing a news conference alongside Swedish Prime Minister Magdalena Andersson in Stockholm on Wednesday, Michel said that although he was "still confident" the bloc will be able to resolve any issues, it will require "a lot of dialogue."
"We are working very hard in order to be able to stay united," Michel stressed.
The Swedish prime minister publicly declared the country's desire "to go further" with sanctions against Russia.
The proposed ban has been largely opposed by Hungary, which has said that such a measure would be "against Hungarian national energy security."