Russian President Vladimir Putin said at the G20 Summit on Monday that there's data that the Islamic State is being financed by 40 countries, including private individuals from G20 countries.

Putin emphasised on the need for countries to come together against the massive threat without quarrelling about which country is better at subduing the terrorist outfit.

Expressing resentment over Washington's behaviour, he added, "We offered to cooperate [with the US] in anti-IS efforts. Unfortunately, our American partners refused. They just sent a written note and it says: 'We reject your offer'."

Showing concern over the illegal oil trade carried out by Isis, he said he shared images taken from Russian aircrafts and satellites of a motorcade "stretching for dozens of kilometres" of refuelling vehicles with countries battling Isis.

Displaying his enterprising attempt at becoming the leader in the fight against Isis, he added that Moscow has already established contact with Syrian opposition groups, who have asked Russia to stop airstrikes against territories they control, and are ready to offer them help from air.

However he lamented the foreign partners' distrust in Russia when it came to sharing information about terrorist-controlled areas, reported

"They're afraid to inform us on the territories which we shouldn't strike, fearing that it is precisely where we'll strike; that we are going to cheat everybody," said Putin. "Apparently, their opinion of us is based on their own concept of human decency."

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