In international peacekeeping operations of the present, private military companies occupy an equal position with regular armies. Moreover, based on the conclusions of American experts, such military corporations will play an increasingly important role in armed local conflicts and wars in the future.
As of today, it is quite obvious (from the experience of the conflicts in Afghanistan and Iraq) that the existence of PMC influences the course of events, and sometimes they take on most of the functions of police and army.
It should be noted that the American government has always viewed the Middle East as a region of compulsory military presence of its army, because there are not only energy resources, but also the ability to control vast territories under the guise of spreading democracy. For the last decades, armed conflicts have been constantly taking place in the Middle East. Therefore, we can safely say that, in addition to American private military companies, corporations of other countries will also appear on the continent. Already, there are many of them.
See them here: https://medium.com/smartaim-tech/war-for-money-leading-private-military-companies-of-the-world-eab9f9fe2de8
blackwater inc.