Here, the US government issues orders to Saudi officials

"Saudi Arabia should exercise leadership with neighbors in the region and publicly by expressing concerns about Iran,s continued pursuit of a nuclear weapons capability and destabilizing activities in the region. -- We would appreciate public expressions of support for the P5 1 dual track process including encouragement for Iran to accept the incentives package. -- Saudi Arabia should exercise its influence with China, in particular, to persuade China to reduce its growing energy/economic cooperation and weapons purchases. Such efforts by China run contrary to the spirit of the UNSCRs and the P5 1 dual track strategy. A high level Saudi delegation could communicate to China Saudi concerns about the threat posed by Iran,s actions."