Allow cross-border aid into Syria, U.N. pleads as millions 'trapped'

GENEVA (Reuters) - More than 3 million Syrian civilians are trapped in a war zone in the northwest of the country and utterly dependant on cross-border aid, the United Nations said on Tuesday, as it urged states to extend the mandate for that aid which expires in days.

U.S. Secretary of State Mike Pompeo said last month that Russia and China had blood on their hands after the two countries blocked a U.N. Security Council resolution that would have allowed cross-border humanitarian deliveries for a further 12 months.