Leaders from the Group of 20 major economies on Monday issued a joint statement highlighting the suffering caused by conflicts in Gaza and Ukraine, while calling for cooperation on climate change, poverty reduction and tax policy.

With leaders from the world's biggest economies converging on Rio de Janeiro for a two-day G20 summit starting Monday, the usually relaxed seaside city is under a tight security blanket.

Demonstrators gathered in Rio de Janeiro on Monday to show solidarity with the Palestinian people as world leaders held the G20 summit.