Attack on the Moscow underground
Nearly 40 people have died in two suicide bomb attacks on the Moscow underground during the morning rush hour.
It was just before 8am when the first explosion went off at Lubyanka, a central station. Police say 14 people inside a train and 11 on the platform were killed. The second attack came about half an hour later at the Park Kultury station, where 12 people were killed. The explosion struck the back of a train as people were boarding.
This is the second bomb attack on the Moscow Metro in 6 six years, one of the world's busiest underground railways, which carries 5 and half million passengers every day.
It is too early to speculate about who's responsible, although the BBC's correspondent in the city, Richard Galpin, says past suicide bombings have been blamed on Chechen rebels fighting for independence in the North Caucasus region.
If you live in Moscow or one of the cities above, we'd like to hear how you feel. Is it impossible to protect public transport systems? If you regularly travel on trains or the underground, what is your reaction?