In his deal with Putin, Trump is closing the investigations into child trafficking and kidnapping of Ukrainian children, and closing down war crimes committed by Russian military.
I agree, Trump advocating for invading Canada and Greenland is enough for the 25th Amendment and on moral grounds I hold him accountable for absolving Putin and Russia of war crimes.
That's not what the 25th amendment is for. The correct process for such criminality is impeachment, which isn't a much higher bar than the 25th. It won't happen, the system is already too corrupt.