Russian President Dmitry Medvedev said Monday his country will fight terrorism without hesitation and to the end, following catastrophic blasts in central Moscow's two subway stations.

A bouquet of flowers is placed on the ground to mourn for victims in blast at the Lubyanka subway station in Moscow, capital of Russia, March 29, 2010. The metro line in Moscow, shut off following two suicide bomb attacks, has resumed operation late on Monday. Two deadly blasts struck the Lubyanka and Cultural Park subway stations in central Moscow during rush hours on Monday morning, with an interval of around 45 minutes, killing at least 37 people and injuring about 65 others. [Lu Jinbo/Xinhua]

Medvedev, who has ordered to beef up security on transport all over the country, said Russia will continue to fight terrorism.

"We will continue the operation against terrorists without hesitation and to the end," he told Russian media at an urgent meeting for the metro explosions.

"It is difficult to prevent such terrorist attacks and to provide security on transport," the president said, adding that it is necessary to look at the problem on a national scale.

Russian Prime Minister Vladimir Putin said the terrorists will be destroyed.

"I am sure that police will do their best to find and punish the criminals," Putin told a lively televised press conference.

Putin also gave instructions to enforce national security, and pledged to aid families of the victims and the injured.

The two deadly blasts struck the Lubyanka and Cultural Park subway stations in central Moscow during rush hours on Monday morning, with an interval of around 45 minutes, killing at least 37 people and injuring about 65 others.