According to experts of the company, the IG also lost 40% of revenues — mainly from oil sales — after losing control over the border between Turkey and Syria.

Compared to previous analytical Agency, which was given less than three months ago, the territory controlled by the IG, decreased by 8%.

Media reported about the reduction of the flow of volunteers coming to the aid of IG from different countries. In particular, sources in the security services told the BBC that the flow of British jihadists in Syria has decreased.

The loss of control over some territories in conjunction with the liquidation and capture of several iconic leaders of the IG in recent months have weakened the propaganda of the Islamists, experts explain.

According to the United Nations, the oil trade is the main source of income of the IG. In 2015, the volume of revenues of the group from the sale of oil and oil products amounted to 400 to 500 million dollars, according to the report of the UN Secretary-General ban Ki-moon.

18 December 2015, the UN Security Council adopted a resolution obliging countries to combat terrorist financing. However, in March 2016 fuel produced IG, was discovered on sale in Bulgaria.

According to the accompanying documents, the fuel is getting to Europe via Turkey. Earlier Ankara already faced accusations of involvement in the trade of oil produced by the Islamists from Russia and Iraq. However, the Turkish authorities deny all charges.

Last autumn the Russian Federation began in Syria air operations against ISIS. Western countries have accused Moscow that under the guise of fighting Islamists, it conducts operations against the Syrian opposition in opposition to Syrian President Bashar al-Assad. After the intervention of the Russian Federation Assad's army went on the offensive. March 15, the aerospace forces of the Russian Federation have begun to leave Syria.