MOSCOW -- Russias counter-terrorism agency says its studying a video posted by an Islamic militant group that asserted responsibility for suicide bombings that killed 34 people last month and is threatening to strike the Winter Olympics in Sochi. Security experts say the Russians are right in taking the threat seriously. The video was posted online Sunday by a militant group in Dagestan, a predominantly Muslim republic in Russias volatile North Caucasus. The Olympic host city of Sochi lies only 500 kilometres (300 miles) west of Dagestan. Two Russian-speaking men featured in the video are identified as members of Ansar al-Sunna, the name of a Jihadist group operating in Iraq. It was unclear whether the men in the video had received funding or training from that group or only adopted its name. There was no confirmation the two men were the suicide bombers who struck the southern Russian city of Volgograd last month as the video claims. Scores of people were also injured by the bombings of a train station and a bus. Russias National Anti-Terrorism Committee said Monday it was studying the video and would have no immediate comment. The video couldnt be viewed in Russia, where Internet providers cut access to it under a law that bans the "dissemination of extremist materials." It was released by the Vilayat Dagestan, one of the units that make up the so-called Caucasus Emirate, an umbrella group for the rebels seeking to establish an independent Islamic state in the North Caucasus. Doku Umarov, a Chechen warlord who leads the Emirate, had ordered a halt to attacks on civilian targets in 2012. But he rescinded that order in July, urging his followers to strike the Sochi Olympics, which he denounced as "satanic dances on the bones of our ancestors." The games run from Feb. 7-23. The Kremlin-backed leader of Chechnya claimed last week that Umarov was dead, but the claim couldnt be verified. The Vilayat Dagestan statement said the Volgograd attacks were carried out in part because of Umarovs order, but it didnt specifically say he had ordered them. Dagestan has become the centre of an Islamic insurgency that has engulfed Russias North Caucasus after two separatist wars in Chechnya. Militants seeking to create an independent state governed by Islamic Shariah law in the Caucasus launch daily attacks on police and other authorities there. One of the two ethnic Chechen brothers accused of staging the Boston Marathon bombings spent six months in Dagestan in 2012. Andrei Soldatov, an independent Moscow-based security analyst, said the video threat need to be taken seriously. "They have capabilities to strike beyond the North Caucasus, which they demonstrated in Volgograd," he said. "Its extremely difficult to stop a lone wolf suicide bombing attack." Georgy Mirsky, a respected Russian expert on the Middle East, said the video reflected the increasingly close ties between Jihadists in the Caucasus and elsewhere. Russias war against Caucasus militants has made it an enemy on par with the United States and Israel for militant Islamic groups in the Middle East, he wrote on his blog. Russia has responded to the Islamic threat by introducing some of the most sweeping security measures ever seen at an international sports event. Some 100,000 police, army and other security forces have been deployed, according to analysts, and tight restrictions have been placed on access to the Sochi area. Anyone attending the Winter Olympics has to buy a ticket online from the organizers and obtain a spectator pass that requires providing passport details. Authorities have already barred access to all cars registered outside of Sochi and Russian police have gone house-to-house methodically screening all city residents. Soldatov argued, however, that Russias massive security presence at the Olympics could also have an adverse effect. "When you put so many troops on the ground, you might get some problems with the co-ordination of all these people," he said. Soldatov noted that the ominous threat of a "present" for the visitors to the Games contained in the video is loosely phrased and could herald an attack outside tightly guarded Olympic facilities. "They never tried to specify the place where they might strike, thats why everybody should be concerned," he said. New Balance Sale Australia .com) - Guard Greivis Vasquez and forward Patrick Patterson, two key pieces to the Toronto Raptors run to an Atlantic Division title in 2013-14, were both given qualifying offers by the team on Saturday. Cheap New Balance Shoes Online Australia .ca has you covered for whos in, whos out and what to expect from all 30 teams. http://www.cheapaustralianewbalance.com/ . The 49ers announced the deal Tuesday. San Francisco selected Lloyd in the fourth round of the 2003 draft. New Balance Cheap Australia . The Union looked to have grabbed a big win in the 88th minute when Amobi Okugo finally put the hosts in front. But a terrible giveaway by Union goalkeeper Rais Mbolhi handed Earnshaw the equalizer in the second minute of stoppage time, keeping the Union two points back of fifth-place Red Bull New York for the final playoff spot in the Eastern Conference. New Balance Clearance Australia . -- The Florida Gators are first yet again this season.ORCHARD PARK, N.Y. -- Buffalos notoriously long, harsh winters have their advantages as far as Jim Schwartz is concerned. The nasty weather that stretched well into April provided the Bills new defensive co-ordinator an additional excuse to stay indoors and become more familiar with his players and staff. "One of the good things about being here in Buffalo is the weather was so bad that we had plenty of time as coaches to stay together," Schwartz said with a laugh, following a voluntary minicamp practice this week. "When the snow was rolling and it was 5 degrees outside, we were holed up in the room watching all their stuff from last year." It was an invaluable experience for the defensive-minded specialist, who finds himself back in his element in Buffalo a few months after losing his job following a five-year stint as the Detroit Lions head coach. "You can spin coaching changes any way you want. The one thing I would say is the players do have a clean slate," Schwartz said. "They have to prove themselves. And Im in the same boat. Ive got to prove myself all over again. Its exciting. Thatll bring out the best in players. Itll bring out the best in coaches." Filling the vacancy after Mike Pettine left to take over the Cleveland Browns, Schwartz inherits a Bills defence that began shedding its once-porous and passive reputation by emerging as the teams strength last season. While Buffalo (6-10) struggled on offence in large part because of rookie quarterback EJ Manuels inconsistencies and injuries, the defence finished 10th in the NFL in yards allowed -- the units best ranking in nine years. The Bills also finished second in the league with 23 interceptions and a franchise-record 57 sacks. And they had four defenders earn Pro Bowl selections, including tackle Marcell Dareus, who was added as an injury replacement. The only area of concern was Buffalos inability to stop the run. The BBills gave up 150 or more yards rushing six times, and finished 28th in allowing an average 129 net yards rushing per game.dddddddddddd Schwartz has a strong track record in devising schemes to stop the run. During his eight seasons as Tennessees defensive co-ordinator, the Titans finished sixth or better in rushing yards allowed six times from 2001-08. Its on Schwartz to build on that success with a unit that features a few new wrinkles at linebacker, where the team added Brandon Spikes and Keith Rivers in free agency, and was unable to re-sign three-time Pro Bowl safety Jairus Byrd. Schwartz is Buffalos fourth defensive co-ordinator in four seasons. He doesnt anticipate a difficult transition, even though hes making the switch to a 4-3 style of defence, and his philosophy is considered less aggressive than Pettines pressure-the-passer approach. Schwartz is keeping much of the same play-calling terminology. And he said the switch to four linemen and three linebackers shouldnt be regarded as significant, because his and Pettines defences share similar elements. Veteran defensive tackle Kyle Williams doesnt foresee much change in the Bills approach. "No, were not going to be read-and-react. Were going to attack guys," Williams said. "Now, if we do it with four rushers, five rushers or six, thatll have to be game-planned. But were going to be on the move. And were going to attack." Spikes liked what hes seen after two weeks of minicamp practices. "Weve still got a long way to go, but if we can take these necessary steps, I think we can be great this season and shock the world," said Spikes, who was signed in part because of his reputation as a run-stuffer during his first four seasons in New England. "I take that personally. If you can stop the run, you can make them one-dimensional," Spikes said. "I think this season therell be some eye-openers." ' ' '