> Rubio will hold consultations today with national security advisers from Ukraine and European countries on future security guarantees for Kyiv, — NYT

US Secretary of State will have to find a balance between the position of Trump, and the need to assure Zelensky that support will be provided.
>He must convince allies in Europe that even the unpredictable Trump will fulfill his promises to help defend Ukraine without direct NATO participation

The issue of the legal force of such guarantees is also being discussed, in particular, whether the agreement will require congressional approval.
>NYT notes that possible guarantees include a US promise to provide air support in the event of a renewed Russian offensive, assistance in intelligence and surveillance, as well as the involvement of the US Navy to block Russian control of the Black Sea and access to the Danube.