King Salman, during his speech at the International Summit, held on 21st May, has declared the participation of Trump is useful to indicate his keenness in reinforcing and assuring cooperation in various fields. What is noting and noteworthy is, during this conference, was possible to assist at inter religious cooperations and also to shared value like countering terrorism and extremism and realizing an united front to fight against them, pursuing a common aim. King Salman has kept on condemning the use of Islam religion in order to achieve political aims as some groups do, for example Hezbollah group, ISIS and also Iranian regime. In addition to this, King Salman has also declared the importance of stopping the revolutionary regime in Iran, established since Khomeini revolution. Iran has neglected all forms of neighborhood. The Gulf Coordination Council has also adopted, with the signing of an agreement with USA, the application of firm measures against terror financing, establishing a center in Riyadh.