Really!..they are as 'bad' as that!
I have already read about them being diggers and had thought about 'underground construction'...but I have hugely under estimated their capabilities! I though maybe a foot or so under frame should do the job..
Good thing that I like to do my research before starting doing anything
I have something already in mind, that resembles something like polytunnel but in smaller scale. Having just built another full size polytunnel for my plant growing, I have plenty of left over supplies to make matching one for Putin to lounge about. Not a permanently fixed one, but thinking of idea with base and movable/adjustable 'tunnel' top.
Would something like 2m/3m x 1.5m be enough wondering around space to keep worst escape ideas from its mind...or should I be looking hiring another garden plot..