How ISIS find money for its war?

Before the attack at Paris a week  that killed 129 US warplanes continued bombing operations against Syria and Iraq diverted direction from the base of the Islamic State of Milwaukee and most of the oil held by the Islamic State again.   According to intelligence agencies, America's Islamic State earn at least $ 400 million a year from oil sales . But according to US Treasury officials this terrorist group earned revenues of $ 500 million a year from the oil sector, which the group seized the area Oil from the Government of Syria and Iraq. Lieutenant Steve Warren said in a press conference that the last US air strikes have disrupted oil production of the Islamic state at least 2 .  

US Air Force operations in eastern Syria on Milwaukee oil and two oil traders, buyers informally known Islamic Economic Arabic that the Abu Sayyaf, according to officials at the Pentagon. According to analysts in the US in the Middle East and in Europe have shown that besides the sale of crude oil Islamic State receives revenue from the sale of money from the sex slave wire hostages from the families of the victims to rob local farmers of land it occupies, which were an important source of income for the annual Islamic State .  

Islamic State spent $ 500 million to buy weapons from the black market, mostly heavy guns AK-47s, which cost $ 500 per . Islamic State oil trading business long before the team received strong interest from the world through video hostage beheaded in 2014.   Islamic State occupied areas along the Syrian border, the main port to benefit from illegal oil trafficking for decades and, since the 1990s it has been created. The Pentagon has acknowledged that for years they avoided attacks on oil tankers in order to reduce deaths and injuries to civilians . Strategic shift since November 16, US warplanes Killing 4 cruisers and 2 planes shot down oil tankers Islamic State 116 . Bloomberg