A busy airport has descended into panic this evening after a man was stabbed without an apparent motive in front of stunned passengers. Spanish police have said a man in his 20s was stabbed as he waited for his friend to arrive in Palma de Mallorca via the island's Son Sant Joan airport this evening. The attack - the second to take place on the island in less than a week - is being described as a brutal assault without motive. Police said a man, with a companion, had gone to Son Sant Joan