Dozens of Palestinians look on as seven men believed to be Israeli informants are publicly executed outside a mosque in central Gaza.
The seven men, who had their hands tied and bags put over their head, were led to a wall and shot dead by masked executioners.
A pro-Hamas website said it would serve as a warning that anyone who aids the Israelis would also be killed in what is known as the "strangling necks operation".
A number of immediate steps have been agreed, while more complex issues will be addressed in further talks set to begin within a month.
After the success of the Ice Bucket Challenge, the people of Gaza are using rubble and dirt instead of cold water to highlight their plight.