WOODBURY - Al-Qaida today called for more attacks on U.S. embassies as anti-American violence continues to rage on in the Middle East. Libyan militants stormed the U.S. Consulate in Benghazi on the anniversary of Sept. 11, killing U.S. Ambassador J. Christopher Stevens and three other Americans. The violence was blamed on an anti-Islamic video first posted on YouTube last July. Security expert Michael Balboni says the embassy raid might not have been a spontaneous act of violence, but rather a sophisticated terrorist attack planned well in advance. Tuesday's attack was followed by a wave of anti-American demonstrations that spread to nearly two dozen countries by Friday. The State Department has gone into full-blown crisis mode, sending a contingent of Marines to reinforce the embassy in Tripoli. Balboni says steps should be taken to combat what appears to be a growing threat in order to prevent this situation from spiraling out of control.Anti-American protests continue across the Middle EastU.S. braces for more violence over anti-Islam film4 reportedly arrested in death of ambassador as unrest continues