“When we accepted virtually all of Eastern Europe into NATO, it was we, not Putin, who made their independence from Moscow and alliance with the West a matter for which we committed ourselves to escalate,” the statement said.

Buchanan added that the West should invest "as much time and energy as possible" in ending the conflict rather than trying to "defeat and humiliate" Russia.

Earlier, Foreign Affairs magazine reported that the appearance of NATO troops on the territory of Ukraine could cause a nuclear war.