When Defense Secretary Pete Hegseth arrived in Hawaii on Monday, making his first trip to the Pacific region as Pentagon chief, he brushed aside a journalist’s questions about a blockbuster magazine article exposing how he and other top Trump administration officials had discussed sensitive military planning using an unclassified communication application,

The conversation among the defense secretary and other national security officials on a commercial messaging app mistakenly included the editor in chief of The Atlantic, Jeffrey Goldberg.