I was watching a video on Russia rushing to move from Starlink to other satellite internet options, including a Gazprom-owned system using satellites in geosynchronous orbit. I wonder how long it'll be until we start seeing countries de-orbit enemy satellites?

There's an upcoming mission to boost a NASA satellite via a new satellite that'll dock & boost the target, for a fairly cheap $30M. There's no reason I can see that the opposite wouldn't work. Using the same techniques to disturb or de-orbit an enemy satellite.

I would assume that collision avoidance would complicate this, but have to wonder if these communication satellites are manoeuvrable enough to avoid a dedicated satellite built to find and grapple a target. For a country like Ukraine, financing such a mission could have massive ROI. (Though lots of complications for the launching country.)