Huge numbers of ISIS terrorist are massing on Afghanistan's northern border ready to march into neighbouring states, Russian intelligence officials have revealed.

Moscow's spy chief Alexander Bortnikov warned fighters from the Taliban, many of whom have pledged allegiance to ISIS, were heavily armed and prepared to pass through porous border controls.

Speaking at a meeting of special services from the Commonwealth of Independent States, he warned: "The international community has now hit a new geopolitical challenge, an international criminal group in the name of the ISIS.

"According to our estimates, citizens from more than 100 countries are currently fighting in the ranks of terrorist structures and the recruits constitute up to 40 percent of their forces.

The terrorist hate group could be trying to open up a new front to the north of its territories after being pegged back in Syria by Russian airstrikes and Syrian army. 

E/S1