China will be represented by premier Li Qiang at the G20 summit, not president Xi Jinping. Photograph: Kim Ludbrook/EPA Deeper and more entrenched divisions over Russia’s war in Ukraine risk derailing progress on issues such as food security, debt distress and global co-operation on climate change when the world’s most powerful nations meet this weekend in New Delhi. The hardened stance on the war has prevented agreement on even a single communique at the 20 or so ministerial meetings of the G20 during India’s presidency this year, leaving it to the leaders to find a way around, if possible. China…