https://www.foxnews.com/world/russia-us-very-sporadic-talks-nuclear-issues-kremlin-says
U.S. and Russian officials have been in “sporadic” contact about nuclear issues, the Kremlin said on Monday, one day after National Security Adviser Jake Sullivan warned of “catastrophic consequences” if Russia uses nuclear weapons.
Russian President Vladimir Putin said last week that his country's nuclear threats are “not a bluff.”
“I want to remind you that our country also has various means of destruction,” Putin said on Wednesday. “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.”