New UN aid chief vows ‘ruthlessness’ to prioritize spending as funding for world’s crises shrinks

GENEVA — The new head of the U.N. humanitarian aid agency says it will be “ruthless” when prioritizing how to spend money, a nod to challenges in fundraising for civilians in war zones like Gaza, Sudan, Syria and Ukraine.Tom Fletcher, a longtime British diplomat who took up the U.N. post last month, said his agency…