In a smiling yet tense interview, Dr. Abdul El-Sayed, the Democratic nominee for Senate in Michigan, argued that his Republican critics were using culture-war issues to distract from Americans’ economic concerns.

© Nick Hagen for The New York Times

President Trump took aim at Oman, a U.S. ally that has been mediating the talks, as efforts to end a war he started have faltered.

© Al Drago for The New York Times