A drone attack, apparently by the Ukrainian secret service was made upon Putin. It failed. There is not much coverage of this, as the Russians are tight lipped about it; there is even a narrative saying that Russians did it, which is just the sort of thing that goes down in a war. The attack obviously failed, but the attempt to kill Putin is an existential threat. Maybe, given so many red lines being crossed, may lead to Russia launching mass cyber-attacks upon the US, and NATO.
https://nypost.com/2023/04/27/ukraine-attempted-to-assassinate-putin-with-drone-claims/