World leaders are being urged to invest billions in a new deal to support Syrian refugees forced to flee their country's brutal civil war.

A major funding conference gets underway in London this morning, but the negotiations come amid a major set back for peace talks in Geneva.

Yesterday the UN announced that discussions had been put on 'pause' until the end of the month - the break is designed to allow humanitarian relief reach besieged Syrian towns.

Former British Prime Minister, who's now a UN special envoy, thinks it'd be a wise investment: