Which of the following countries has formed the 34 nations Islamic Anti-terror Coalition?

Saudi Arabia
Saudi Arabia has launched Islamic Military Coalition, a new military alliance of 34 nations mainly Muslim nations to fight terrorism. It has been established in pursuance of the objectives and principles of the charter of the Organization of Islamic Cooperation (OIC). It calls for all member states to cooperate to combat terrorism in all its forms and manifestations. The establishment of coalition comes amid international pressure on the Gulf Arab states to do more in the fight against so-called Islamic State.