Gen. Igor Konashenkov, says in just one month air defense assets have downed 45 drones targeting the Hemeimeem air base. The base in the province of Latakia serves as the main hub for Russian operations in Syria.

MOSCOW (Reuters) - Russia's defense ministry said on Thursday it was investigating which country produced explosives used in recent drone attacks on Russian bases in Syria, RIA news agency cited the ministry as saying.

MOSCOW – Russia said Tuesday that a recent series of drone attacks on its military bases in Syria would have required assistance from a country possessing satellite navigation technology -- a statement that appeared to be aimed at the United States. Russia's Defense Ministry said its forces repelled a series of drone attacks Saturday on the Hemeimeem air base and a naval facility in Tartus, adding that out of the 13 drones involved, seven were shot down and six were forced to land without inflicting any damage. Without blaming any specific country, the ministry said data for the attacks could only have been obtained "from one of the countries that possesses know-how in satellite navigation." In Tuesday's statement, it noted a "strange coincidence" of a U.S. military intelligence plane flying over the Mediterranean near the two Russian bases at the moment of the attack. The Pentagon denied any involvement.