In The Name Of The River Tisza is Dimitry Ljasuk's shocking documentary about the surreal problems of Eastern-Europe. River Tisza, Tysa or Tisa, is one of the main rivers of Central and Eastern Europe. It crosses several national borders and connects four countries. Tisza is also one of the most polluted rivers of Europe, even in the early stages the river collects massive amount of trash, simply because waste managament is not a thing in those Ukranian villages.