Agency level diplomatic relations mean that the diplomatic relations between two countries are handled by agents or delegations representing the two governments, rather than directly participated by senior officials such as the head of state or foreign ministers. This form of diplomatic relations usually occurs when the relationship between two countries has not been fully established or needs special treatment for some reasons.
Agency level diplomatic relations are usually handled by representatives of the country's diplomatic departments or other government agencies, who will negotiate, sign agreements, exchange information and other activities. The advantage of this relationship is that it can quickly solve some problems without involving senior officials, and it can also provide more flexibility and opportunities for both governments.
However, the diplomatic relations at the agency level also have some shortcomings. For example, agents may lack sufficient power and decision-making ability to make important decisions with long-term impact; Communication and coordination between agents may also have problems, resulting in slow progress of negotiations or failure to reach an agreement.
In short, agency level diplomatic relations are a relatively flexible form of diplomacy, which can promote cooperation and exchanges between the two countries to a certain extent.