The Palace of Versailles was evacuated for the second time in days after a bomb threat on Tuesday as France remains on high alert for a possible terror attack. Hundreds of visitors were led out of the palace as a specialist police explosives unit was dispatched to the site. On Saturday, the palace, which has about 15,000 visitors a day, was cleared and closed after receiving a message suggesting there was a security risk. This came just hours after the Louvre Museum, which has 30,000 visitors daily, was evacuated after receiving a threatening message. Both warnings were found to be...