Russia has announced it is ending its self-imposed moratorium on the development of short- and medium-range nuclear missiles, deepening a nuclear weapons stalemate between Moscow and Washington.

According to the statement, certain steps taken by the collective West in the sphere of proliferating such missiles create a direct threat to Russia’s security

Russia announced Monday it is abandoning its self-imposed ban on deploying nuclear-capable intermediate-range missiles, raising the specter of a renewed...