In recent weeks Russia has stepped up supplies of military gear to Syria, including armoured vehicles, drones and guided bombs, boosting President Bashar al-Assad just as rebel infighting has weakened the insurgency against him, sources with knowledge of the deliveries say.



Moscow, which is trying to raise its diplomatic and economic influence in the Middle East, has been a major provider of conventional weapons to Syria, giving Assad crucial support during the three-year civil war and blocking wider Western attempts to punish him with sanctions for the use of force against civilians.



Syria has even said some countries formally opposed to Assad have begun discussing security cooperation with his government.



Several sources told Reuters that Assad's forces had since December received deliveries of weaponry and other military supplies, including unmanned spy drones known as UAVs, which have been arranged by Russia either directly or via proxies.



Vyacheslav Davidenko, spokesman for Russia's arms export monopoly Rosoboronexport, said they could not comment on arms deliveries to Syria.



Russia has said it violates no international laws with its military supplies to Syria and does not sell Damascus offensive weapons.



The U.S. State Department said it had no independent confirmation that Russia had increased military supplies to Syria but said such actions would be concerning if true.

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