They were smiling and chatting. Soon Trump took his place in the front row, where he stood in between Prince Mohammed bin Salman, of Saudi Arabia, who was beaming, and a more sober-looking President Recep Tayyip Erdoğan, of Turkey. On Friday and Saturday, the President was scheduled to have private sessions with all three of them, and also with the tough-guy nationalist leaders of Brazil, China, and India."
