This article - May 7, 2023 - is Hungarian (see the linnk below), but referring to Der Spiegel about the real threat of the end of the world nuclear regime caused by the Russian/Ukrainian war.
Citing Siegfried S. Hecker (automated translation):
"The most immediate danger is, of course, that Russia could deploy nuclear weapons. Putin's threats appear to be aimed at keeping the West at bay. Since these are nuclear threats, they should still be taken seriously. But even greater is the danger that comes from the combination of all these developments"
