The Bureau of Diplomatic Security (DS) is a division of the U.S. Department of State responsible for ensuring the safety of U.S. diplomatic missions and personnel worldwide. It provides security for embassies and consulates, conducts threat assessments, and manages crisis response efforts. Additionally, the Bureau oversees the protection of visiting foreign dignitaries and officials, ensuring their safety during official visits. DS also investigates passport and visa fraud, contributing to the integrity of the U.S. immigration system. Its work is vital for maintaining international relations and protecting U.S. interests abroad.