Raid is in the eastern city of Luhansk , where the group was allegedly plotting attack . Comment: Authorities say they seized 300 guns , knives and a grenade launcher . U.S. Defense Secretary Chuck Hagel says the `` world will respond '' to Russia 's actions .
Raid is in the eastern city of Luhansk , where the group was allegedly plotting attack . 15 were detained , accused of betraying the government , weapons violations . Authorities say they seized 300 guns , knives and a grenade launcher . U.S. Defense Secretary Chuck Hagel says the `` world will respond '' to Russia 's actions .