Becoming part of the European Union’s visa-free regime was a major victory for Ukraine. Now Ukrainians might lose it.

The EU provided a firm warning to Ukrainian lawmakers that in order for Ukraine to stay within the visa-free system, they must follow specific demands mentioned in a report released on Dec. 20. They must stop undermining the work of the National Anti-Corruption Bureau and Special Anti-Corruption Prosecutors Office, as well as establish a special anti-corruption court.