GAZA CITY Palestinians surged triumphantly into demolished Jewish settlements in the Gaza Strip early today, torching empty synagogues and firing shots into the air, as the last Israeli soldiers withdrew after 38 years of occupation. The troops' departure marked the final step in the government's decision to leave Gaza, which Israel captured in the 1967 Middle East War, and opened an era laden with uncertainty for the coastal enclave's 1.3 million Palestinian residents. Having evacuated about 8,500 Jewish settlers last month and overseen the razing of their homes, the 3,000 Israeli soldiers moved out before sunrise in convoys of tanks...