A more thorough explanation:

Diplomatic representation refers to the act of officially representing a country or government in a foreign country. This can include ambassadors, consuls, and other officials who are authorized to act on behalf of their home country.

For example, the United States has diplomatic representation in many countries around the world, with ambassadors and other officials who work to promote American interests and maintain relationships with foreign governments.

Diplomatic representation is important for maintaining international relations and promoting cooperation between countries. It allows for communication and negotiation between governments, and can help to resolve conflicts and promote peace.