Russian President Vladimir Putin warned Western countries that his country's nuclear threats are "not a bluff" on Wednesday.

Putin issued the warning after accusing Western countries of resorting to "nuclear blackmail," despite no NATO countries threatening to use nuclear weapons. The threat comes as Russia's prospects in Ukraine are grim, with Putin's military losing thousands of square miles of territory to a Ukrainian counteroffensive.

"To those who allow themselves such statements regarding Russia, I want to remind you that our country also has various means of destruction, and for separate components and more modern than those of NATO countries, and when the territorial integrity of our country is threatened, to protect Russia and our people, we will certainly use all the means at our disposal," Putin said in a Wednesday address.

"It's not a bluff," he added.

TOP MILITARY BRASS IN UKRAINE'S SOUTH CALLS FOR VOLUNTEERS AS FORCES LOOK TO TAKE BACK KHERSON

Russian President Vladimir Putin meeting wearing blue suit and red tie in meeting

Vladimir Putin attends a meeting via videoconference at the Novo-Ogaryovo residence outside Moscow, Russia, on June 1. (Mikhail Metzel, Sputnik, Kremlin Pool Photo via AP)

A Russian truck being driven in Ukraine

A Russian military truck drives past an unexploded munition in the Russia-controlled village of Chornobaivka, Ukraine, July 26, 2022. (Reuters/Alexander Ermochenko)

RUSSIAN TROOPS BOXED IN BY UKRAINIAN FORCES AND DNIEPER RIVER, BARGE CARRYING SUPPLIES TO RUSSIAN TROOPS SINKS

Ukraine's counteroffensive has pushed Putin toward drastic measures, with Russia announcing a partial military mobilization late Tuesday. The policy will see the Russian military conscripting reservist civilians.

Fear of a wider mobilization has reportedly caused a mass exodus of young men fleeing Russia since the announcement. Flights from Russia to countries that do not require visas were completely booked Wednesday, according to The Telegraph.

Putin argues conscription is necessary to "protect our homeland, its sovereignty and territorial integrity, to ensure the security of our people and people in the liberated territories."

Putin's threats come less than a day before President Biden is scheduled to address the United Nations General Assembly. The White House says Biden will condemn Putin's "naked aggression" and make the case that Russia has violated the U.N.'s core tenets.

Joe Biden makes speech with flag in background

President Joe Biden speaks during an event at the Royal Castle in Warsaw, Poland, amid Russia's invasion of Ukraine, March 26, 2022. (Slawomir Kaminski/Agencja Wyborcza.pl via Reuters)

"He’ll offer a firm rebuke of Russia’s unjust war in Ukraine and make a call to the world to continue to stand against the naked aggression that we’ve seen these past several months," national security adviser Jake Sullivan said Tuesday.

CLICK HERE TO GET THE FOX NEWS APP

"He will underscore the importance of strengthening the United Nations and reaffirm core tenets of its charter at a time when a permanent member of the Security Council has struck at the very heart of the charter by challenging the principle of territorial integrity and sovereignty," he added.