Spanish police said Friday they have busted an international ring suspected of smuggling nitrous oxide, commonly known as "laughing gas," and contraband tobacco. Officers confiscated 5,184 liters of nitrous oxide from a warehouse and the home of the suspected owner of the trucks used by the ring in the southern province of Malaga, police said in a statement . Authorities also seized more than 2.5 million contraband cigarettes from a truck in the eastern province of Alicante while members of the