Putin delivers a nuclear warning to the West over Ukraine

President Vladimir Putin on Tuesday delivered a nuclear warning to the West over Ukraine, suspending a bilateral nuclear arms control treaty, announcing new strategic systems had been put on combat duty and warning that Moscow could resume nuclear tests.

Speaking nearly a year to the day since ordering an invasion that has triggered the biggest confrontation with the West since the depths of the Cold War, Putin said Russia would achieve its war aims and accused the West of trying to destroy Russia.

Cautioning the United States that it was...