It's not a common word, but a pentarchy is a government of five rulers, or a governing body of five. Just as the Five Families were getting comfortable in their position as the pentarchy in the country, in butted Andrej Babiš, claiming a sixth seat at the table. An uninvited guest is worse than a Tatar, as the Russians say. Even better for Babiš than squeezing an extra chair around the table and creating a hexarchy would be to squeeze out one or two of the Five. His attacks so far have been aimed mainly at J&T (Křetínský/Tkáč/Roman). He upped the ante on Sun. on OVM, asking why Miroslav Kalousek, as finance minister, allowed Penta to divert Kč 4bn from Prague Airport for overpriced land supposedly needed for a runway. If this continues, Penta can pretty much kiss good-bye the idea of unloading Vodochody Airport to Prague Airport for another exorbitant price. Babiš is starting to disrupt pentarchical affairs in a major way.