In a message of condolence to his Spanish counterpart, Jose Maria Aznar, he described them as "acts of hatred that must and will be defeated".
Izražavajući saučešće u poruci upućenoj španskom kolegi Hozeu Mariji Aznaru, Karamanlis je napade u Madridu opisao kao «akte mržnje koji moraju i koji će biti poraženi».