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States use diplomacy to resolve disputes, form alliances, negotiate treaties, strengthen economic relations, promote cultural and military exchanges, and for a variety of other purposes. Diplomacy encapsulates a broad arrangement of shifting rules, etiquette, goals, procedures, and agreements. There are international laws that govern some aspects of diplomacy, while other elements are based on tradition, pragmatism, and expediency. Nonstate actors — including but not limited to nongovernmental organizations and multinational corporations — play an increasingly important role in diplomatic relations as the tides of globalization alter the international landscape.
Most aspects of diplomacy are based on tradition, pragmatism, and expediency.