Cold-War Style Spying Russian Couple's Arrest Could Mar Diplomatic Ties

German investigators have arrested two suspected Russian undercover agents -- a married couple believed to have been spying on Germany for over two decades. The case could hurt relations between Germany and Russia.
A poster of Russian Prime Minister Vladimir Putin, a former KGB spy.

A poster of Russian Prime Minister Vladimir Putin, a former KGB spy.

Foto: ALEXANDER DEMIANCHUK/ REUTERS