Israel's war on the Gaza Strip lasted three weeks and killed more than 1,300 people. Now there are more accusations about Israel's use of illegal weapons in the fighting. Just hours after Israeli forces withdrew from the Strip footage has also surfaced showing the tunnels that lead from Egypt into Gaza are still being used to smuggle in supplies. Destroying the tunnels was one of the principal justifications Israel gave for its offensive. Al Jazeera's Tarek Bazely reports.