The treaty was ratified 'through the agency of' a neutral country.
He found work as a mechanic through an 'employment agency'.
an athlete who has become eligible for 'free agency'
(..) with your host, Peter Graves. Although no one has ever been able to prove their existence... ... a quasi-government agency, the Men in Black... ... supposedly carries out operations here on Earth... ... in order to k eep us safe from aliens throughout the galaxies. (..)2002 Men in Black II