What instrument of National Power does the Department of State employ to lead diplomacy and diplomatic strategy?

The Department of State is primarily responsible for managing the United States' foreign affairs and representing American interests abroad. Diplomacy is one of the key instruments of national power, and it involves the negotiation and maintenance of international relations, treaties, and agreements. The Department of State employs diplomatic efforts to engage with other nations, resolve conflicts, and promote U.S. foreign policy objectives. This includes facilitating communication between the U.S. government and foreign leaders, participating in international organizations, and advancing the nation’s interests through dialogue and negotiation.

While the other instruments of national power—such as informational, military, and economic—are also important in shaping long-term national strategies, they are often used in conjunction with diplomatic efforts to achieve comprehensive national objectives. Nevertheless, when it comes specifically to leading diplomacy and crafting diplomatic strategies, the Department of State operates under the diplomatic instrument of power.