Turkish President Recep Tayyip Erdogan said he had discussed with U.S. leader Joe Biden the issue of F-16 deliveries to Turkey and the latter promised to resolve it within three to four weeks."I spoke with Mr. Biden and discussed this issue directly both yesterday and today. He said that if the process proceeds as stated, he will resolve the issue within three to four weeks. As for the issue of components [for the F-16], we discussed this personally as well," Erdogan said at a press conference in Washington following the NATO summit.