Demonstrators attacked the U.S. embassies in Yemen and Egypt on Thursday in protest at a film they consider blasphemous to Islam, and American warships headed towards Libya after the U.S. ambassador there was killed in related violence this week. In Libya, authorities said they had made four arrests in the investigation into the attack that killed ambassador Christopher Stevens and three other Americas in Benghazi on Tuesday. President Barack Obama has vowed to bring to justice those responsible for the Benghazi attack, which U.S. officials said may have been planned in advance, possibly by an al Qaeda-linked group.

For more log onto- http://www.newsx.com