Al-Qaeda only indirectly controls its day-to-day operations. Al-Qaeda's philosophy calls for the centralization of decision making, while allowing for the decentralization of execution. Al Qaeda’s top leaders have defined the organization’s ideology and guiding strategy, and they have also articulated simple and easy-to-receive messages. At the same time, mid-level organizations were given autonomy, but they had to consult with top management before large-scale attacks and assassinations. Top management included the shura council as well as committees on military operations, finance, and information sharing. Through Al Qaeda’s information committees, he placed special emphasis on communicating with his groups. However, after the War on Terror, al-Qaeda's leadership has become isolated. As a result, the leadership has become decentralized, and the organization has become regionalized into several al-Qaeda groups.