Animated explainer of what Putin’s nuclear threat means

The video discusses the escalation of nuclear tensions due to Russia's order to transfer deterrence forces to a special combat mode. This could imply various strategic moves, such as dispersing ballistic missiles or moving tactical warheads. Pavel Podvig suggests it might mean the nuclear command system is on alert, allowing for quick action if needed. However, he emphasizes that this does not indicate a first strike intention by Russia.

What is the significance of connecting the wires in the nuclear command system during a threat?

What does Pavel Podvig conclude about Russia's preparation for a first strike?