Hello, this is Hui Jie writing to you from Singapore. Welcome to another edition of CNBC's Daily Open. China seems to be the place to visit for world leaders over the past two weeks, and not simply for runners wanting to conquer the Great Wall Marathon over the weekend. Days after Air Force One departed Beijing, Russian President Vladimir Putin is set to visit the Chinese capital for talks with Chinese President Xi Jinping. Meanwhile, the war in Iran seems to be becoming a marathon for U.S.