What We're Tracking Russia awaits a formal U.S. response amid Ukraine tensions. The likelihood of future U.S.-Russia talks regarding Russian demands for security guarantees is likely to become clearer by the end of next week after Moscow receives a formal, written U.S. response to its proposals. Concerns over possibly imminent Russian military action against Ukraine will continue to rise as Russia's military buildup continues in full force and Moscow signals that it may not hold a new round of negotiations with the United States at this time amid their impasse. Moscow could end the talks next week or stall them, only to reengage in a few days or weeks when it believes its leverage — and the threat of military action against Ukraine — will be even greater.