The United States on Monday announced a $2 billion pledge for UN humanitarian aid as President Donald Trump's administration continues to slash US foreign assistance and warns United Nations agencies to adapt, shrink or die in a time of new financial realities. The money is a small fraction of what the US has contributed in the past but reflects what the administration believes is a generous amount that will maintain the United States' status as the world's largest humanitarian donor. The pledge creates an umbrella fund from which money will be doled out to individual agencies and priorities, a key part of US demands for drastic changes across the world body that have alarmed many humanitarian workers and led to severe reductions in programs and services. The $2 billion is only a sliver of traditional US humanitarian funding for UN-backed programs, which has run as high as $17 billion annually in recent years, according to UN data. US officials say only $8-$10 billion of that has be