"Terrorists’ resistance in Syria has not been broken down to the end," Lavrov said in an address to the participants in an anti-terror conference in Moscow, TASS reported.
"Scattered groups of terrorists continue fierce fighting. Notably, militants suffer no shortage of weapons and munitions. Moreover, they use state-of-the-art weapons, such as unmanned aerial vehicles. Evidently, it would be impossible without foreign sponsors," he added.
"The counter-terrorist operation in Syria has exposed numerous evidence of supplies of various weapons and hardware to terrorists by bogus companies via third countries," the top diplomat stressed.
The Russian top diplomat called on the world community to do away with the so-called "grey zones" in the economy used as a channel to supply militants with weapons.
He also insisted that the practice of dividing terrorists into "good" and "bad" be stopped, noting that "life proves that everyone loses in the long run".