Russian President Dmitry Medvedev condemned Monday's suicide bombings on Moscow's Metro rail line and vowed the country would battled "to the end" against terrorism, DPA reported.
"We will lead our operations against the terrorists without compromises and to the end," Medvedev said.
The president ordered stepped-up security measures in all the country's transportation networks. Moscow's airports were also put on a higher state of alert.
He called for increased vigilance throughout the country, and said that it was apparent that security measures had been inadequate.
Medvedev also called on the security service FSB and the country's other security forces not to permit any destabilizaiton in the country. He said the terror attacks were precisely planned to try to put the country and society off-balance.
State television showed Medvedev observing a minute of silence for the victims of Monday's twin bombings before he made his remarks.