Moscow metro hit by suicide bombers

Earlier today, the Moscow metro (subway) system was hit by two female suicide bombers. The attack seems to be connected to Chechen leader Umarov, but -as always- it is unclear whether he is simply claiming them, or whether they were actually part of his rebel fighters.

The bombers hit 45 minutes apart at Lubyanka and Park Kultury, killing 37. I'll be carrying a heavy heart today, thinking not only of my Muscovite friends and acquaintances, but also of the repercussion of this attack. Putin is already scaling up security measures. It will be interesting, and likely disheartening, to see how far he takes it.