Can I still be an international policeman now?

There are mainly two international police organizations.

One is the "Interpol" mentioned by a friend earlier, which is mainly a permanent organization to jointly crack down on transnational criminal crimes. It is composed of members from all member countries, wearing their own police uniforms. To join Interpol, you must first become the Interpol of the host country, perform well, participate voluntarily, organize examination, strictly train and pass the examination before you have a chance.

The other is the civil/riot police force organized by the United Nations, which mainly carries out the peacekeeping tasks of the United Nations, usually in turn. It is also composed of members from all member countries, wearing their own police uniforms. To be a peacekeeping policeman, you must first become a member of your own police, and in China, you must become a member of the police of the public security system and the armed police. You performed well, volunteered to receive training in Langfang Peacekeeping Police Training Center, and passed the assessment of the United Nations.

In short, if you want to become an "international policeman", you must first become an excellent policeman in your own country and wear your own police uniform when you go out.

By the way, the people who defend the United Nations Headquarters are local policemen in the United States, wearing American police uniforms.