Press Secretary of the President of Poland Marek Magierowski said, Censor.NET reports citing Ukrinform.
According to him, a broader format of talks on solving of the Russian-Ukrainian conflict is in need.
Expansion of Nord Stream-2 pipeline hurts EU, Poland, and Ukraine - Duda
Magierowski recalled that the President of the Republic of Poland Andrzej Duda has repeatedly talked about including Ukraine's neighboring countries and the United States in the negotiations to "pressure on Russia to be more effective."
President of Poland Andrzej Duda will pay an official visit to Ukraine on Dec.14-15.