However, that agreement did not address the grievances that caused the protests, and the pro-Russian Yanukovych fled Kiev for protective sanctuary near Moscow within days of signing it.
"Instead of a promised national unity government," Lavrov said, "a 'government of the victors' has been created.''
US officials say the February 21 agreement could form the basis for a political resolution to the crisis but would have to be significantly altered.
Both Kerry and Lavrov are to attend meetings in Paris on Wednesday about refugee spillover in Lebanon from the other war on a NATO border — the three-year bloody conflict in Syria. It is likely they will discuss the crisis in Ukraine.
Obama for years tried to cultivate Russian Prime Minister Dmitry Medvedev, the former president, as a friend of the United States.