We turn our focus away from Washington intrigue and go to Saudi Arabia, where President Trump was welcomed this weekend, and to China, whose government intentionally crippled American spying operations by killing C.I.A. informants, a Times investigation shows. Guests: Peter Baker, who is in Saudi Arabia with the president; Mark Mazzetti, who has been investigating the mysterious deaths in China. For more information on today’s episode, visit http://nyti.ms/2qfbgtv.