Demonstrators from various NGOs and charities gather on World Children's Day in London to demand action from the international community to end Gaza's blockade. "We want to force the Israeli government to open the crossings and allow food, fuel, water, medicine into Gaza," says Richard Stanforth, policy advisor at Oxfam, outside Lancaster House, on the sidelines of the Global Food Security Summit. The coastal territory, under a crippling blockade since Hamas took power in 2007, has been besieged by Israel since the war erupted, leaving food, water, medicine and fuel in short supply. Israel has vowed to destroy Hamas after its militants carried out unprecedented attacks inside Israel on October 7, killing around 1,200 people, most of them civilians, and taking some 240 people hostage, according to Israeli officials. IMAGES AND SOUNDBITES