Iran's interest in nuclear technology dates to the 1950s, when the Shah of Iran received technical assistance under the U.S. Atoms for Peace program. While this assistance ended with the 1979 Iranian Revolution, Iran remained interested in nuclear technology and developed an extensive nuclear fuel cycle, including sophisticated enrichment capabilities, which became the subject of intense international negotiations and sanctions between 2002 and 2015. Negotiations between the P5+1 and Iran yielde