At the end, when Liz "decodes" the message with the Cyrillic alphabet, the Russian word it supposedly decodes to is about as much gibberish as the "qprand" they get from the Latin they originally try.
During their operation in Belarus, Cooper claims INTERPOL will come and "arrest" the director of a museum that holds a stolen painting. INTERPOL is not law enforcement force with authority on national soil, let alone in terms of arrests. It is merely a bureaucratic institution that facilitates cooperation among national LE authorities.
It is not clear how Townsend knew that Elizabeth had Red at gunpoint and let him get away. He was not there, and it's unlikely that she told him.