AP: Mediators’ efforts to extend a ceasefire between the United States and Iran have made progress as the warring sides are expected to return soon to the table for another round of negotiations, regional officials said. The officials said mediators aim to extend the ceasefire, which is due to expire on April 22, for at least another two weeks to allow diplomacy another chance. They said that both sides gave an “in principle agreement” to extend the ceasefire.