"The Foundation for the Study of Democracy is led by Maksim Grigoriev. He is the Chairman of the Coordinating Council for Public Control over Voting at the Civic Chamber of the Russian Federation. The organisation started working on discrediting the Ukrainian side in 2013, when pro-Russian president of Ukraine Viktor Yanukovych refused to sign the Association Agreement with the European Union."

The document they provided is pure Russian propaganda. It doesn't need excusing.