Russia's foreign minister said Western sanctions have been "unpleasant" but not too painful overall.
In an interview due to air on Russia's Channel One today, Sergei Lavrov said: "The sanctions ... I don't want to say that they are laughable, I don't want to say that we don't care.
"They are unpleasant. But the fact they try to take those sanctions on a more personal level and present them as directed at certain people personally - it is clearly a desire to take revenge, we can see it with the naked eye".
Mr Lavrov and US Secretary of State John Kerry are scheduled to meet in Paris later today.
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.