USA introduces sanctions against Russian companies

The US Department of State has introduced sanctions against three Russiancompanies - the Tula instrument-making design bureau, Bazalt scientific andproduction association and aircraft enterprise No. 168. In addition, theDepartment of State added these companies to its 'black list'.According to the US agency, the above Russian companies are involved insupplies of military technologies to countries that support terrorism, RTRtelevision reported..