A more thorough explanation:

Definition: Diplomatic relations refer to the customary form of permanent contact and communication between sovereign countries in international law.

Examples:

• When two countries establish diplomatic relations, they typically exchange ambassadors or other diplomatic representatives to serve as official channels of communication.
• Embassies and consulates are often established in each other's countries to facilitate diplomatic relations and provide assistance to citizens traveling abroad.

These examples illustrate how diplomatic relations involve the establishment of official channels of communication between countries, often through the exchange of diplomatic representatives and the establishment of embassies and consulates. These channels of communication are important for facilitating international cooperation and resolving disputes between countries.