It's purely a theatrical threat. Russia still has plenty of drones and other types of missiles. Supplies are limited sure, but it's not like they're running out yet. This is just a demonstration of how crazy Putin is after changing their nuclear stance. And also a response to the US testing an ICBM just recently.

It's a warning. The US allowed Ukraine to hit Russian territory so Russia is saying we can escalate it right back.

Some military experts said the ICBM launch, if confirmed, could be seen as an act of deterrence by Moscow following Kyiv's strikes into Russia with Western weapons this week.

"An ICBM launch can certainly be seen as a threatening gesture, potentially in response to the lifting of restrictions on ATACMS and Storm Shadow. It’s a means of deterrence," said a European military source.