Ukrainian protesters concerned West hasn't acted quickly enough

(CNN) – Secretary of State John Kerry scolded the Russian government during his visit Tuesday to the Ukrainian capital of Kiev, accusing Russian President Vladimir Putin of "making up" reasons to invade Ukraine.

He issued a warning for Russia to essentially reel itself in, or suffer the consequences.

"If Russia does not choose to deescalate if it is not willing to work directly with the government of Ukraine as we hope they will be then our partners will have absolutely no choice but to join us to continue to expand up on steps we have taken in recent days in order to isolate Russia politically, diplomatically ... and economically," Kerry said.

CNN's Anderson Cooper is in Kiev, and said while Ukrainian protesters appreciated Kerry's visit, they are still concerned that the U.S. and the European Union have not acted fast enough to punish Putin, and isolate him diplomatically and economically.