Here is a good analysis on the centers of power here in Ukraine:FT.com / World - Yushchenko probes Kuchma regime.
I think the jury's out on whether what Yuschenko and his supporters are doing will be enough to take power. I thought no two days ago, but now I am not so sure. Calls for negotiations and the military not all on board and some members even threatening retaliation are not signs of a secure power base. But we will have to see.
(via a A Fist Full of Euros)