Foreign Minister of Denmark Kristian Jensen said this to Reuters.
"If Ukraine doesn't come through with the reforms linked to the Minsk peace process, it will be very difficult for Europe to continue united in support for sanctions against Russia," he noted.
"They [Ukraine] need to push those reforms now, they can't wait," the Foreign Minister of Denmark said.
Jensen said Aivaras Abromavicius decision to step down was also a warning that Europe needed to help more. The European Union and other Western governments are pouring money into Ukraine to reform the police, customs and the energy sector in one of the world's most corrupt countries.