Finnish President Alexander Stubb said on Tuesday that Western countries are continuing to develop a framework for security guarantees for Ukraine, Reuters reports.

The discussions are focused on planning security arrangements for Ukraine after a potential ceasefire, with Western officials working to ensure protection without provoking further escalation.

Stubb added that any Western security measures would depend on a peace agreement with Russia, but he said he is not optimistic a ceasefire will be achieved soon.

Russia’s repeated rejection of Western security proposals for Ukraine puts the process in doubt. European leaders have emphasized that Moscow’s consent is essential. 

Stubb said coordination with the United States is central, as it would provide the main support for any post-ceasefire security arrangement. “We are working closely with our military chiefs to draw up concrete plans for what these security operations could look like,” he said.

German officials have previously stressed that Ukraine would need NATO-style security guarantees before any peace deal.