The Bureau of Intelligence and Research (INR) is an intelligence agency in the United States Department of State. Its central mission is to provide all-source intelligence and analysis in support of U.S. diplomacy and foreign policy. INR is the oldest civilian element of the U.S. Intelligence Community and among the smallest, with roughly 300 personnel. Though lacking the resources and technology of other U.S. intelligence agencies, it is "one of the most highly regarded" for the quality of its work. INR is descended from the Research and Analysis Branch (R&A) of the World War II-era Office of Strategic Services (OSS), which was tasked with identifying the strengths and weaknesses of the Axis powers. Widely recognized as the most valuable component of the OSS, upon its dissolution in 1945, R&A assets and personnel were transferred to the State Department, forming the Office of Intelligence Research. INR was reorganized into its current form in 1957. In addition to supporting the policies and initiatives of the State Department, INR contributes to the President's Daily Briefings (PDB) and serves as the federal government's primary source of foreign public opinion research and analysis. INR is primarily analytical and does not engage in counterintelligence or espionage, instead utilizing intelligence collected by other agencies, Foreign Service reports and open-source materials, such as news media and academic publications. INR reviews and publishes nearly two million reports and produces about 3,500 intelligence assessments annually. The INR is headed by the Assistant Secretary of State for Intelligence and Research reporting directly to the Secretary of State and serves as the secretary's primary intelligence advisor. In March 2021, President Joe Biden nominated Brett Holmgren to lead INR. History In May 2004, the National Security Archive released a highly classified review of INR's written analysis of the Vietnam War during the 1960s commissioned in 1969 by then-INR director Thomas L. Hughes. The review showed that INR had repeatedly warned of the weaknesses of the South Vietnamese Government and of the failing US strategy in Vietnam, and that, despite pressure from the military and Pentagon, INR had portrayed and projected the course of the war more accurately than any other source. In June 2009, the Federal Bureau of Investigation (FBI) arrested former INR employee Walter Kendall Myers on charges of serving as an illegal agent of the Cuban government for nearly 30 years and conspiring to provide classified U.S. information to the Cuban