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U.S. Ambassador to Ukraine Geoffrey Pyatt. Plus, a look at Vladimir Putin's international image.
(CNN) – The United States is advising airlines with direct flights to Russia to be aware of the possibility that explosive materials could be concealed in toothpaste or cosmetic tubes, according to a law enforcement source.
The source emphasized on Wednesday that there was no known threat to the United States, but the notice to U.S. and international carriers is based on new intelligence information ahead of the start of the Olympics in Sochi this week.