Thirty-five people were killed at the airport when a suicide bomber detonated explosives in a reception area where drivers and others wait for incoming passengers on international flights. Between 110 and 125 people were hospitalized; government agencies continued to disagree on the exact number.
One report said there were two bombers, a man and a woman, but others described a lone man. Sources told Russian wire agencies that the FSB had been on the lookout for a terrorist attack at an airport, but because it was expecting women to be the perpetrators, it missed the bomber.
Prime Minister Vladimir Putin is a veteran of the FSB and its predecessor, the KGB, and under him the agency has achieved unparalleled clout within the government. Critics say it has grown so powerful that it is beyond reproach and now beyond even the Kremlin's control.
Medvedev met with top officials of the FSB on Tuesday morning and sounded a tough line - but not toward the agency. "You cannot be too soft with bandits. It was another and very cruel challenge to our society and the state in general," he said. "We have to do everything toward finding, exposing and prosecuting the bandits who committed this crime, and the dens of these bandits, no matter how well they are hidden, should be eliminated.
"The FSB and law enforcement bodies have sufficient experience in such operations. We must act."
Putin said Tuesday that "retribution is inevitable" for the attack. "I have no doubt that this crime will be resolved."
Both men have said these sorts of things after previous terrorist acts, even as the number of attacks in Russia, many of which attract little attention, has been increasing sharply.
Fears of a clampdown
Each major attack - the most recent before Monday's was on the Moscow Metro last March - brings a strengthening of central authority, said Ilya Yashin, the leader of the youth wing of Solidarity, an opposition party. "And yet we have bombs in the center of Russia," he said. "Not a single Russian has a feeling of security."
He said he worries that the government might exploit the bombing by banning demonstrations, possibly revoking the Russian Constitution's Article 31, which, though rarely observed, guarantees freedom of assembly.
Vladimir Ryzhkov, another opposition leader and a former speaker of the State Duma, or lower house of parliament, said he doesn't expect further clampdowns on freedoms.
"Everything has been done," he said. "Governors are no longer elected but appointed. Mayors are barely elected. We don't have free Duma elections, we don't have free media, opposition parties cannot register or take part in elections.
"I can't imagine what more can be done."
The problem, he said, is that nothing will be done about terrorism, either. "There will be no real reaction, no reforms, no good changes. That means in the coming months we will have another attack."
It is not for a lack of manpower. The various police and security forces in Russia far outnumber the army. The police presence at demonstrations is always heavy.
But critics say the FSB and other agencies are not geared toward the prevention of terrorism. Their main function, said Andrei Soldatov, an investigative journalist, is to preserve the stability of the state. And an incident like the one at Domodedovo isn't seen as a threat to the state's foundation, he said.
Domodedovo was back to normal Tuesday afternoon. Flights were once again coming in from Munich, Berlin, Brussels, Hurghada, Odessa, Vienna, London and Frankfurt. One difference was noticeable: The metal detectors were operating, and everyone walked through them after entering the arrival hall.
A blue cordon channeled arriving passengers past a partitioned-off area, where sheets of blue and green plastic hung from the ceiling. The sounds of hammers and saws came from within, and a sign on the partition said, in English and Russian, "Sorry for the Inconvenience."
Incoming passengers filed through, many not noticing a large pile of flowers on the floor next to the partition. Red carnations were stacked high next to a dozen roses. Tea lights flickered in three large, translucent plastic drinking cups. One man crossed himself as he walked rapidly by.
"I'm here every day," said Eduard Mkhitaryan, one of the drivers lined up as usual along the blue cordon. Monday he was later than usual because the London flight was delayed. He arrived at 5 p.m., less than 30 minutes after the explosion. The police, he said, had not yet come.
"It was awful," he said, briefly recalling smoke, panic, blood. "It was frightening. I don't want to talk about it. I want to try to forget it."
Like others at the airport, Mkhitaryan said there was no use worrying about returning to the scene of the explosion. You have to work. Nothing will change. "If nothing changed after the Metro explosions, it won't change now," he said. "It's the mentality."
Another driver, Viktor Fakunin, said he wasn't afraid to show up at the airport Tuesday. "You have your destiny, and you cannot run away from it," he said. "If you are destined to hang, you will never drown."