International police cooperation has emerged as a critical component of US law enforcement's international mission, with many agencies sending their experts overseas to teach foreign departments and police officers. Depending on the host department's or country's demands, the training may vary. Defensive tactics, bike patrol techniques, community policing, investigative strategies, forensics, or organizational structure may be included. Because of the worldwide character of police, law enforcement leaders must have a thorough understanding of international law and policy. The ILEA Program is a national project that trains law enforcement officers worldwide, especially in nations that have recently emerged from dictatorships.

Jim Feldkamp pointed out that developing police services in nations with weak or no institutional law enforcement systems can be critical to achieving global security and stability. Deployed Canadian police officers assist in the establishment of professional policing services that serve their local communities and safeguard their people around the world as part of a variety of UN peacekeeping and stabilization missions.

This is a difficult procedure involving both the host government's leadership and assistance and a fundamental understanding of the laws that regulate policing. A wide range of resources is available to assist officers, administrators, and trainers in understanding these difficulties and facilitating international police cooperation.

Among the organizations that provide training in international law enforcement are Interpol, the International Association of Chiefs of Police (IACP), and the Center for Policing Leadership and Ethics. These organizations also research global policing issues and provide recommendations on how to enhance policing in their own countries or countries of interest.

Interpol, a nongovernmental organization that aims to prevent and combat transnational crimes such as terrorism and a crime against minors, drugs, money, computer, and human trafficking, is at the top of the list of organizations with a global presence. Interpol's 192 member countries run local clearinghouses, known as NCBs, through which individual police forces communicate with the General Secretariat or other NCBs of their peers.

There are numerous additional international police groups, some of which focus on specific areas of international criminal activity or provide help to law enforcement. Some are concerned with developing and supporting worldwide law enforcement standards, while others are concerned with international police exchanges or other cross-border policing activities.

Worldwide academies and other professional development efforts provide officers worldwide with leadership and law enforcement training. For example, the ILEA Program provides courses in the United States and overseas to improve international police capabilities to combat drug trafficking and other criminality. The International Association of Chiefs of Police (IACP) oversees several international police initiatives to train and assist law enforcement officers in underdeveloped countries. These programs provide training and mentoring to foreign government agencies in various areas, including international police operations, international crime prevention, and intelligence collecting.