By Paul Sonne and Karen Deyoung, The Washington Post In a December phone call with Saudi Arabia’s King Salman, President Donald Trump had an idea he thought could hasten a U.S. exit from Syria: Ask the king for $4 billion. By the end of the call, according to U.S. officials, the president believed he had a deal. The White House wants money from the kingdom and other nations to help rebuild and stabilize the parts of Syria that the U.S.