Iran and world powers including the United States concluded their fourth round of nuclear negotiations in Vienna on Wednesday, as the sides look to secure an agreement enabling a mutual return to compliance with the abandoned 2015 pact. Russia’s representative to the talks, which began in early May, said all …

For U.S. officials who worked under former President Barack Obama, many of whom are now beginning or contemplating jobs in Joe Biden’s administration, the war in Yemen casts a long shadow. What started on their watch as a primarily internal power struggle has since metastasized into a messy and multilayered …

Few nations have seen their dreams and hopes dashed as quickly and ruthlessly as South Sudan. A mere two years after thousands thronged the streets of the capital, Juba, to celebrate independence from Sudan’s autocratic rule, the country descended into a brutal civil war. The fallout between President Salva Kiir …