Moscow, Jan 26 (Agencies): Prime Minister Vladimir Putin vowed revenge for the suicide bombing that killed 35 people at a Russia’s busiest airport.
 
Putin has built much of his reputation on harsh statements, but he did not elaborate on what kind of retribution he had planned or against whom in his comments on Tuesday carried by Russian news agencies.
 
Lax security also was blamed for Monday's explosion in the international arrivals area of Domodedovo Airport that also injured 180 people, with President Dmitry Medvedev criticising police and managers at the airport, the largest of three that serve the capital.

No one has claimed responsibility for the attack, but suspicion has fallen on Islamist separatists from Chechnya or elsewhere in the restive Caucasus region who have been battling Russian authority for over 15 years.

Putin rose to power in 2000 on a now-famous vow that Chechen rebels would be hunted down and killed "in the outhouse." But despite a second devastating war that brought Chechnya back under Moscow's control and sanctioning the violent rule of his chosen Chechen leader, Putin has been unable to wipe out the Islamic insurgency that has spread across much of the Caucasus.

A brutal crackdown on the insurgency has produced a backlash that has led to almost daily attacks on police and security forces in the Caucasus and brought the terror to Moscow.