Poetry and Politics? You don't often find them together these days, apart from the bandwagon that was Poets Against the War, but this poem from TechCentral by Fred Turner was written to mark the departure of the spirit of Spain from the coalition of the willing. If you know some Spanish landmarks you might find it interesting. It certainly has a grandeur about it, but for copyright concerns I think I'll just quote a few lines:

He has renounced his captaincy
and given up command;
For who is there to stand with him
who loves his native land?

You can find some rollicking discussion of it, and the politics behind it, here.