Latest on UK airbase threat

British authorities are investigating whether a foreign state was involved in an apparent plot to attack an airbase used by the US military. Five masked men were arrested near an RAF base in England early yesterday on suspicion of "explosives and terrorism offenses." The base has been used by US warplanes to carry out what have been described as defensive operations against Iranian attacks. Iran's embassy in London has denied any involvement in the incident, and the five suspects have since been released. The World's Europe Correspondent Orla Barry joins Host Aaron Schachter with the latest.