Russian investigators said Arab operatives linked to Al Qaida played a major role in the takeover of a Russian school in which 400 people were killed. Russian officials said authorities have determined that 10 of the 32 suicide attackers who took over a high school in Beslan in North Ossetia last week were nationals from several Arab countries. Most of the attackers were Chechens and Ingush who had been trained at Al Qaida camps in Afghanistan. The 10 Arab nationals came from Jordan, Saudi Arabia and Syria, officials said. They said security forces seized notebooks in Arabic in the school...