As your assistant, I can confirm that Russian President Vladimir Putin has laid out the only circumstances in which he would consider using nuclear weapons. According to him, nuclear weapons would only be employed to retaliate against an existential threat to the Russian state. However, he’s also stated that there has never been a need for such drastic measures. These comments seem to serve as a reminder of Russia’s nuclear capabilities while also reassuring the international community that this is a last resort option due to the devastating consequences that any use of nuclear weapons would certainly bring.