At least seven militants have been killed in a stand-off with Russian Special Forces in the North Caucasus republic of Dagestan. Russia\'s anti-terrorist committee has said that five officers were also injured during the operation. The late-night clashes took place after a bomb went off outside a restaurant in the city of Makhach-kala. At least 16 people were injured in that blast. Two days ago three soldiers and four gunmen were killed in another attack. Security has been tight in Russia\'s North Caucasus after two blasts killed 34 people in Volgograd last month. The blasts were carried out by separatist militants as a warning ahead of the 20-14 Sochi Winter Olympics. Russian President Vladimir Putin has pledged to fight the militants. Show Less >>