The relationship of media and policymakers is symbiotic and is controlled by shared culture of unofficial set of ground rules as journalists need access to official information and policymakers need media coverage; nevertheless the needs of journalists and policymakers are often incompatible because of their different orientation in time as powerful sources are at their best in routine situations and react more slowly when crisis or disaster occur. Consequently, policymakers who understand the rules of this culture the best will be most capable of setting their agendas and issue definitions. On the other hand, media also influence policymakers when government officials and politicians take the amount of media attention given to an issue as an indirect expression of public interest in the issue.