NY Times:
BRUSSELS — NATO military officials are exploring whether to upgrade their defenses to make them capable of shooting down newly deployed Russian intermediate-range nuclear missiles after a landmark arms treaty dissolves next month, according to three European officials.
Any change to the stated mission of NATO’s current missile defense system — aimed at threats from outside the region, like Iran — would probably divide the alliance’s member countries and enrage Russia, which has long said it views NATO’s missile defense site in Romania and one under construction in Poland as a threat to its nuclear arsenal and a source of instability in Europe.
“It would be a point of no return with the Russians,” said Jim Townsend, a former Pentagon official and expert on the alliance. “It would be a real escalation.”