September 7, 2003 (Sunday)
- Israeli-Palestinian conflict: Israel's Prime Minister Ariel Sharon declares that Hamas leaders are "marked for death" and will not have a moment's rest, after Israel failed in an attempt to kill the top-ranking members of Hamas with a 550-pound bomb dropped on a Gaza City apartment.
- Violence surges sharply in Indian-controlled Kashmir with a series of separatist attacks across the Himalayan region. This follows a bomb explosion on Saturday in the main wholesale market for fruit in the region, which killed six people and wounded 25.
- Tennis: Andy Roddick defeated Spain's Juan Carlos Ferrero in straight sets (6–3, 7–6, 6–3) in the Men's Singles Final at the U.S. Open. This marks the first Grand Slam victory for the 21-year-old American.
- Warren Zevon dies in Los Angeles