The underlying cause of the crisis is the shattering impact of the US
 conquest and occupation of Iraq, which destroyed the country as a 
functioning society. Faced with widespread armed resistance to the US 
occupation, the Bush administration deliberately fomented sectarian 
warfare between Shiites and Sunnis, culminating in the bloodbath of 
2006-2007.
Prominent Democrats, including Biden himself, were 
identified with this divide-and-rule strategy for securing the gains of a
 criminal war. Biden is well known for having advanced in 2006 a plan 
for the partition of Iraq into three semi-independent parts: a 
Shiite-ruled south and center, a Sunni west and northwest, and an 
autonomous Kurdistan in the country’s northeast. The divisions within 
the country currently run along those lines, with ISIS in control of 
most of the Sunni-populated region.
The promotion of sectarian 
divisions in Iraq was followed under the Obama administration by the 
promotion of Sunni Islamic fundamentalist organizations in the war first
 in Libya to overthrow the government of Muammar Gaddafi, and then in 
Syria against the government of Bashar al-Assad. ISIS itself emerged out
 of these operations, financed largely with weapons and funds from the 
US-backed gulf monarchies. The US took action to curtail its advances 
only after it began to take over oil-rich regions in Iraq.
-- Patrick Martin, "US Vice President Biden travels to Iraq for crisis talks" (WSWS).
 
 
