Danger and Matridom's counsels are keen - and I had been evaluating a number of possibilities depending on your reaction, but I'll go with ...
25w. d5
Reason:
Threatening your rook at g2 by moving Bh3 would simply allow you to re-position it at g6, which is not good for me right now.
This move is intended to provoke a reaction, possibly even an exchange of material where at the very least our rooks will be traded. My bishop and your knight may be thrown in there too, depending on how aggressive you are feeling.
