CLEAN : US 'ready' for Russia diplomacy and to 'defend' allies: Sullivan

The transcript discusses the importance of negotiation and making tangible progress on key issues concerning Europe and Russia. It emphasizes the readiness to defend allies and respond to aggression while highlighting diplomacy as the preferred approach. The Russians are encouraged to make their own assessment of the situation.

What is the context of the discussions mentioned in the text?

What must the Russians do according to the text?