Mathias Kruck and others and Kingdom of Spain ICSID Case No. ARB/15/23 - World Trade and Arbitration Materials View Mathias Kruck and others and Kingdom of Spain ICSID Case No. ARB/15/23 by - World Trade and Arbitration Materials Mathias Kruck and others and Kingdom of Spain ICSID Case No. ARB/15/23 35 1 World Trade and Arbitration Materials