Nothing justifies the "collective punishment" by Israel of the Gazan people who are facing "unimaginable" suffering, UN Secretary-General Antonio Guterres tells AFP. Guterres lashes out at Israel's handling of its war in the devastated Palestinian territory, now almost in its second year, as the UN prepares to host world leaders from next week. (COMPLETES VIDI36G7946_EN & VIDI36GG6KH_EN) IMAGES AND SOUNDBITES