hamburg u.s. president donald trump saturday promise 639 million aid fee people leave starve drought conflict somalia south sudan nigeria yemen trump pledge come work session g20 summit world leaders hamburg provide godsend unite nations world food programme group executive director david beasley tell reuters sideline meet face bad humanitarian crisis since world war two say beasley republican former south carolina governor nominate trump head u.n. agency fight hunger worldwide new fund bring 1.8 billion aid promise unite state fiscal year 2017 crises four countries unite nations estimate 30 million people need urgent food assistance new assistance unite state provide additional emergency food nutrition assistance life-saving medical care improve sanitation emergency shelter protection affect conflict usaid say statement rob jenkins act head usaid bureau democracy conflict humanitarian assistance say fund 191 million would go yemen 199 million south sudan 121 million nigeria almost 126 million somalia conflict four countries make difficult reach communities need food note dire situation right say jenkins add usaid also concern situation southern ethiopia situation southern ethiopia fortunately rise dire situation four situation deteriorate might well catastrophic without additional interventions say add washington already provide 252 million year ethiopia need continue grow beasley say u.s. fund third wfp estimate require year deal urgent food need four countries crisis well areas wfp estimate 109 million people around world need food assistance year 80 million last year 10 13 worst-affected zone stem war man-made crises beasley say estimate receive fund need immediately 400,000 600,000 children would die next four months say trump announcement come administration propose sharp cut fund u.s. state department humanitarian missions part america first policy beasley say agency work hard white house u.s. government secure fund trump would insist countries contribute well wfp spokesman say germany recently pledge additional 200 million euros food relief g20 summit trump pledge 639 million aid four countries