The United States evacuated diplomats’ families from Ukraine out of an “abundance of caution,” Kristina Kvien, the U.S. acting ambassador to Ukraine, said on Tuesday. “The decision was made because right now [President] Vladimir Putin and Russia have built up such military might on the border that they could take an action any day now,” Kvien told ABC News, as tensions mount over the possibility of a Moscow-led invasion. The United States felt that out of an abundance of caution, embassy families had to be kept safe, she said. “So that was the basis for a decision,” said Kvien. The U.S. State Department on Sunday authorized non-essential U.S. embassy staff to leave Ukraine, while families of Kyiv embassy staffers were ordered to leave. State department officials also said at the time that the decision was made out of an “abundance of caution.” In response, Ukrainian foreign ministry spokesman Oleg Nikolenko called the decision “premature” …