Zoning is a tool that most cities use to govern âusesâ (e.g. residential, commercial, or industrial), the size of buildings, and how buildings relate to their surroundings, including other buildings, open spaces, and the street.n the U.S., zoning began as a tool to separate uses from one another, and in particular was used to separate more impactful uses (manufacturing) from more sensitive uses (residential). This type of zoning is largely known as Euclidean Zoning, named after the U.S. Supreme Court Case that legitimized the use of the tool.
covert operation. n an intelligence operation so planned as to permit plausible denial by the sponsor. Types: black operation.
Covert action is a necessary yet sometimes controversial instrument of U.S. foreign policy. As the challenge of Soviet hegemony emerged as the principal threat to national security, the U.S. used covert action on a wide scale with the goal of combating the threat of worldwide Soviet domination.ongress and the Intelligence Community, a publication of The Intelligence and Policy Project of Harvard Kennedy School's Belfer Center for Science and International Affairs. Covert action is one of many foreign policy tools used by policymakers to advance national interests.