BBC News with Michael Powles

Thirty-five people have been killed and many more injured in a bomb attack at the busiest airport in Moscow. Russian investigators say the blast in the arrivals hall at Domodedovo airport was caused by a suicide bomber. Daniel Sandford is at the scene.

The explosion happened just before 4:30 local time. Several international flights had just arrived. Eyewitnesses said the baggage hall was packed. There was a huge explosion, and the whole building shook. The site of what appears to have been a devastating bomb was in the area where relatives and drivers wait for people to come through customs. The pick-up and set-down area was soon crowded with ambulances and fire engines. The President Dmitry Medvedev immediately

postpone

d his trip to Davos and promised those responsible would be

tracked down

.

Supporters of the Lebanese caretaker Prime Minister Saad Hariri have taken to the streets in several towns and cities to protest against efforts by the militant Hezbollah movement to form the next government. They accuse Hezbollah of carrying out a coup. Hezbollah and its allies have moved closer to

securing

the nomination of an American-educated billionaire Najib Mikati as the next prime minister. From Beirut, here's Kevin Connolly.

Saad Hariri's supporters are furious at the prospect that he will

emerge

as the loser from the political manoeuvring which followed the collapse of his fragile coalition government. And their anger was