So, once upon a time not that long ago, this wd have been referred to as 'creeping socialism'. As it is, this has got to be one of the weirdest invasions I've ever heard about: the Russian infiltration of Georgia, which is being overrun a hundred yards at a time. Want to know what it's like to go to sleep in one country and wake up in another, without having moved a foot? Go visit Georgia (while you can; it'll soon all be South Ossetia).
Here's the link.
current reading: AS I SEEM TO REMEMBER by Sir Leonard Woolley (post.publ. by Allen & Unwin 1962)