Ukraine needs help on all fronts: military, civilian and humanitarian. Our will cannot waver | David Miliband

I've seen the bravery and resilience of the Ukrainian people. At this week's UN general assembly, world leaders must help them

Recently, Michael Kofman, senior fellow at the Carnegie Endowment for International Peace and one of the foremost analysts of the war in Ukraine, urged that the west plan for the long war". He was talking about the military challenges facing the country: ammunition, air defence, key enablers and scaling up training.

Kofman is right - the massive scale of the operation ahead cannot be underestimated. A recent trip I made to Kyiv confirms the extraordinary bravery, resilience and commitment of the Ukrainian population. But it also laid bare the civilian cost of the war, visible and invisible. With no end to the war in sight, civilian and humanitarian needs must be planned for, not just military ones.