BRUSSELS (Reuters) - U.S. President Donald Trump expects by the end of the year “real progress” among NATO allies to step up their defense spending toward the minimum criteria of two percent of their economic output, Vice President Mike Pence said on Monday. Speaking at NATO headquarters in Brussels, Pence said: “America will do our part but European defense requires European commitment as much as ours... The president expects real progress by the end of 2017.” 