Washington’s senior envoys to the United Nations took a victory lap in Senate testimony on Wednesday over the US-inspired cuts and efficiency drive at the multilateral agency, even as they slammed its inability to end the conflict in Ukraine, stem the Iran war started by the US and Israel or curb China’s growing clout. Mike Waltz, US ambassador to the UN, touted the US$570 million in UN budget cuts, 3,000 fewer jobs and the US decision to pull out of several UN agencies, even as he defended US...