COUNCIL DECISION of 13 March 2012 on the conclusion, on behalf of the Union, of the Arrangement between the European Union and the Republic of Iceland, the Principality of Liechtenstein, the Kingdom of Norway and the Swiss Confederation on the participation by those States in the work of the committees which assist the European Commission in the exercise of its executive powers as regards the implementation, application and development of the Schengen acquis (2012/193/EU)