Press Association: Global action was demanded to tackle the "silent tsunami" of the world food crisis amid warnings that more than 100 million people faced being plunged into hunger. Josette Sheeran, executive director of the World Food Programme (WFP), said the international community needed to respond like it did to 2004’s giant Indian Ocean wave which killed 250,000 and left 10 million destitute. She is in London for a food prices summit which will be joined by Prime Minister Gordon …