Medvedev vows to avenge blasts

Dmitry Medvedev, the Russian president, has vowed to “wipe out” those responsible for two bombings on the Moscow metro system that left at least 38 people dead.

Officials say two female suicide bombers, who they suspect to be from the North Caucasus region, struck at two central stations within 40 minutes of each other.

Neave Barker reports from Moscow.