President Vladimir V. Putin of Russia said the West faced the prospect of nuclear conflict if it intervened more directly in the war in Ukraine, using an annual speech to the nation on Thursday to escalate his threats against Europe and the United States.
Mr. Putin said NATO countries that were helping Ukraine strike Russian territory or might consider sending their own troops “must, in the end, understand” that “all this truly threatens a conflict with the use of nuclear weapons, and therefore the destruction of civilization.”
“We also have weapons that can strike targets on their territory,” Mr. Putin said. “Do they not understand this?”
The Russian leader alluded to comments by President Emmanuel Macron of France this week raising the possibility of sending troops from NATO countries to Ukraine, a scenario the Kremlin said would lead to the “inevitability” of a direct conflict between Russia and the Western alliance.
The United States and other Western governments have largely tried to distance themselves from Ukrainian strikes on Russian territory, and Mr. Macron’s remarks about the possibility of Western troops being sent to Ukraine drew quick rebukes from other Western officials, who have ruled out such deployments.
Mr. Putin, however, considers Russian-occupied Ukraine to be Russian territory, and he seized on Mr. Macron’s remarks to amplify his threat. “We remember the fate of those who once sent their contingents to the territory of our country,” Mr. Putin said, an apparent reference to the invasions of Hitler and Napoleon. “But now the consequences for potential interventionists will be much more tragic.”
