Mathias Kruck and others v. Kingdom of Spain, ICSID Case No. ARB/15/23, Decision on Annulment - World Trade and Arbitration Materials View Mathias Kruck and others v. Kingdom of Spain, ICSID Case No. ARB/15/23, Decision on Annulment by - World Trade and Arbitration Materials Mathias Kruck and others v. Kingdom of Spain, ICSID Case No. ARB/15/23, Decision on Annulment 38 4 World Trade and Arbitration Materials