Women hold placards which read "To Moscow free of charge" as they try to get from Domodedovo airport to Moscow January 24, 2011. A suicide bomber killed at least 31 people and injured more than 130 on Monday at Moscow's Domodedovo airport, Russia's biggest. A suicide bomber killed at least 35 people at Russia's biggest airport on Monday in an attack that bore the hallmarks of militants fighting for an Islamist state in the north Caucasus region. REUTERS/Diana Markosian (RUSSIA - Tags: POLITICS CRIME LAW DISASTER)