According to intelligence recently received by Israeli security officials, al Qaeda plans to attack Israelis and Jews in Prague. The Czech capital is a popular destination for Israelis and other Jews because of its centuries-old Jewish quarter. Czech officials say that no additional security has been put in place because police have been on heightened alert since the Sept. 11, 2001 attacks in the U.S., and they have received no official information from Israel about specific threats in Prague. Consider this information if planning to visit the Jewish quarter or establishments where Israelis congregate.