He says that includes making sure that the military doesn't step into a situation that civilians should resolve.
Obama says the US condemns the violence in the strongest terms.
He says the US holds Ukraine's government primarily responsible to ensure it's dealing with peaceful protesters appropriately.
Obama is speaking in Mexico after arriving for an international summit.
He says the US is deeply engaged with European partners, Ukraine's government and the opposition. He says the violence has captured the entire world's attention.