Russian Spies

The Cold War might be over, but not all aspects of the Cold War seem over. Monday's arrest of 11 people alleged of spying for  Russia on Monday came at a time when the United States and Russia are trying to work together to improve the tense relationship held by the two countries.

The story continues with:

1. Anna Chapman was denied bail. 
2. Robert Christopher Metsos disappeared in Cyprus
3. The spies not really spying by trying to recruit spies.

Why do the Russian need spies? It doesn't really seem clear right now.