Former national security adviser Mike Waltz will testify before the Senate on Friday morning on his nomination for U.S. ambassador to the United Nations. Waltz, who left his previous post in May after controversy surrounding the Trump administration’s use of the Signal messing app,

Mike Waltz, U.S. President Donald Trump's pick to be his U.N. envoy, said on Tuesday, adding that he is "confident we can make the U.N. great again."

The hearing will provide senators with the first opportunity to grill Waltz over revelations in March that he added The Atlantic editor-in-chief Jeffrey Goldberg to a private text chain on an unclass...