A police officer checks the hand luggage of a woman as people wait in a line to pass through a metal detector at Moscow's Domodedovo airport January 25, 2011. A suicide bomber killed at least 35 people at Russia's busiest airport on Monday, state TV said, in an attack on the capital that bore the hallmarks of militants fighting for an Islamist state in the North Caucasus region. REUTERS/Tatyana Makeyeva (RUSSIA - Tags: CRIME LAW TRANSPORT)