As long as they are nor behaving like the army of the world I'm fine with America being the policeman of the world.
Certainly when they go looking for the leaders of the Lord's Resistance Army in Central Africa:
President Barack Obama is sending about 100 U.S. troops to Africa to help hunt down the leaders of the notoriously violent Lord's Resistance Army.

"I have authorized a small number of combat-equipped U.S. forces to deploy to central Africa to provide assistance to regional forces that are working toward the removal of Joseph Kony from the battlefield," Obama said in letter to the House Speaker John Boehner and Daniel Inouye, the president pro tempore of the Senate. He was making a reference to the head of the LRA.

"I believe that deploying these U.S. Armed Forces furthers U.S. national security interests and foreign policy and will be a significant contribution toward counter-LRA efforts in central Africa."