What to know

• BRUSSELS — Russia has warned NATO that it would not hesitate to use nuclear weapons to defend Kaliningrad should anyS1
• BRUSSELS (AP) — Russia has warned NATO that it would not hesitate to use nuclear weapons to defend Kaliningrad should any members of the military bloc try to cut off its western exclave from the rest of the country.S2
• Russia has warned NATO it could use nuclear weapons to defend Kaliningrad if allies attempt to cut off the exclaveS3