Russian Foreign minister Sergei Lavrov has said that Moscow and Washington have agreed to work with the Ukrainian government and the country's people to overcome the crisis, after meeting US Secretary of State John Kerry in Paris, Russian agencies reported.
"We have agreed to work with the Ukrainian government and people to achieve progress in rights of minorities and linguistic rights," Lavrov told reporters.
He also said Russia and the United States agreed it was necessary to seek "points of tangency" in order to reach a common position on the diplomatic resolution of the crisis.
An unusually frank Nato Secretary General issued an unequivocal warning on the course of events should Russia attack Latvia or Estonia.
The West responds with sanctions and closer political ties with Ukraine as Russia's President seals the annexing of Crimea to much fanfare.
Supporters of the controversial fracking industry believe shale gas could be America's most potent weapon in the stand-off with Russia.