Turnstone, a project carried out with the support of PSF, aims to enhance law enforcement authorities cooperation between border agencies (Police, Border Police, Border Guard and Coast Guard organisations in Estonia, Finland, Latvia, Lithuania, Sweden, and Poland) in the northern BSR corresponding to the need for border agencies to initiate compensatory measures and new models of cooperation since the enlargement of Schengen area in 2007-2008. Lund University’s research on the project can be accessed here.