Diplomatic institutions are organizations and entities that facilitate communication and negotiation between countries. They include embassies, consulates, and international organizations like the United Nations. These institutions play a crucial role in maintaining peaceful relations, addressing conflicts, and promoting cooperation on global issues. In addition to representing their home countries, diplomatic institutions also provide services such as visa processing and assistance to citizens abroad. They help in fostering trade, cultural exchange, and understanding among nations, contributing to international stability and development.