US President Donald Trump berated fellow NATO members on Monday for not contributing enough to the alliance while maintaining a trade surplus with the United States, keeping up a recent drumbeat of criticism before meeting European leaders this week in Brussels. On the eve of his departure for the NATO summit being held on Wednesday and Thursday, Trump linked two well-worn gripes: funding for the North Atlantic Treaty Organization and other countries’ trade practices. “The United States is spending far more on NATO than any other Country. This is not fair, nor is it acceptable. While these countries have been increasing their contributions since I took office, they must do much more,” Trump wrote on Twitter. In another tweet, the Republican president complained about Europe’s trade surplus with the United States. Trump has slapped tariffs on billions of dollars worth of steel and aluminum imports from China, the European Union, Canada and others, prompting