It seems like Bush's SDI will be useless.
Here is a short report about the succesful testing of a new maneurable warhead:
http://www.msnbc.msn.com/id/4317546/
It is not entirely correct but I could not find a better english language report. In fact, it is much more interesting. This warhead uses the "deflection effect" on the re-entry to atmosphere - sort of what happens when you fling a rock to the lake in a way it will be reflected and jump few times before sinking. It allows drastic changes in the direction of flight - rocket no longer restricted to the fixed ballistic trajectory and can go around the SdI sites. It also increases the range and now you need much smaller and compact rocket to rich the target - it may give mighty complications to the tracking of missile' position and launch time