The presidential candidates confronted each other in front of the TV cameras for four hours on Thursday, with only two breaks of about 30 minutes. They argued about security, the economy, education — and the role of sharia law. The location was Cairo. The more secular candidate, former diplomat Amr Moussa, accused his opponent of being an Islamist hard-liner in moderate’s clothing. The Islamist, former Muslim Brotherhood leader Abdel Moneim Aboul Fotouh, accused Moussa of complicity in the former Hosni Mubarak regime.