NABLUS, WEST BANK—Riots broke out in the streets of Nablus at 3 p.m. Monday, shattering a Middle East peace that had lasted for nearly 45 minutes. The violence, which left 15 Palestinian civilians and at least a dozen Israeli soldiers dead, was the most significant fighting to erupt in the volatile region since 2:15 p.m. that same day, when an Israeli tank ran over 85 rock-throwing Palestinians in the Gaza Strip. "Just before lunch, I believed things were moving forward," said disappointed Israeli Prime Minister Benjamin Netanyahu, speaking from a Jerusalem-area falafel shop. "But now that this delicious falafel and hummus sandwich is done, I just do not know." Netanyahu vowed to work with PLO leader Yasser Arafat to secure a true, lasting peace that will endure well into weekend.