One of the types of "green" public procurement has been studied - circular procurement based on the
principles of circular economy. Their purpose is to ensure that the goods or materials from which they are made
are used in the new cycle at the end of their service life. The basic legal models of organization of such purchases
are considered and the conditions under which procurements become circular and contribute to the achievement
of sustainable development goals, namely the availability of special technical specifications, are identified. Special
technical specifications allow the use of goods or materials in the new cycle. Emphasis is placed on the need to
apply a "circular criterion", which requires the continued use of goods or materials. Possible ways of introducing
circular public procurement into the national public procurement system are suggested. The impact of public
circular procurement on global security is argued
