MOSCOW/TEHRAN – Prime Minister Vladimir Putin vowed revenge on Tuesday for a suicide bombing that killed at least 35 people at Russia's busiest airport.

Talking tough a day after the bombing, Russia's leaders ordered security services to root out the culprits behind the attack, Reuters reported.
“This was an abominable crime in both its senselessness and its cruelty,” Putin told a meeting of ministers in Moscow.
“I do not doubt that this crime will be solved and that retribution is inevitable.”
Iranian Foreign Ministry spokesman Ramin Mehmanparast condemned the terrorist attack on the Moscow airport.
Mehmanparast also offered condolences to the bereaved families of the victims and expressed sympathy with the Russian nation and government.
President Mahmoud Ahmadinejad also sent a message of condolence to Russian President Dmitry Medvedev, denounced the terrorist attack and sympathized with the Russian nation.
President Medvedev criticized law enforcement agencies and airport managers over the attack at Domodedovo, a major international gateway to Russia. At least eight foreigners were killed in the attack.
“Everything must be done to find, expose and bring the bandits who committed this crime to court -- and the nests of these bandits, however deep they have dug in, must be liquidated,” he said.
“We must not stand on ceremony with those who resist ... they must be destroyed on the spot,” Medvedev told leaders of the Federal Security Service (FSB), which is tasked with coordinating Russia's fight against terrorism.
The bombing, which ripped through the area where international travelers emerge after collecting their bags, came just days before Medvedev is due to pitch Russia to investors and corporate leaders at the World Economic Forum in Davos, Switzerland.
Medvedev has delayed his departure for Davos, where he is due to deliver the keynote speech opening the forum. Russia's Health Minister Tatyana Golikova said 49 people remain in a serious or very serious condition in hospital.
There was no immediate claim of responsibility for the bombing, but Russia has been grappling with a growing Islamist insurgency in the mainly-Muslim republics which make up its southern flank in the North Caucasus.
Rebels from the region have threatened attacks against cities and economic targets in the run-up to a parliamentary election this December and a 2012 presidential poll in which Putin is expected to return to the Kremlin or back his protégé Medvedev for a second term.
Russian financial markets, accustomed to periodic bombings and hostage dramas over the past 12 years, showed little reaction. The benchmark rouble-denominated MICEX share index was trading up 0.22 percent at 1441 GMT. The rouble closed virtually unchanged from Monday.
“Terrorism remains the main threat to the security of our state, the main threat to Russia, to all our citizens,” Medvedev said. He said terrorist attacks increased last year, calling it “the most serious signal” for law enforcement.
“It is clear that there is a systemic failure to provide security for people” at Domodedovo, said Medvedev.
Photo: Russian Prime Minister Vladimir Putin, second from right, speaks to hospital director Valery Kubyshkin, left, Moscow mayor Sergei Sobyanin, second left, and Health Minister Tatyana Golikova, right, as he visits the Vishnevsky hospital where some of the victims of Monday's bombing at Domodedovo Airport are being treated, Moscow, Tuesday, Jan. 25, 2011. (AP/RIA Novosti/ Pool