1) The document discusses the arming of Iraqi security forces by countries like the US, Iran, and Russia in an effort to stem the advance of ISIS in Iraq.
2) It outlines US efforts to modernize and train the Iraqi security forces since 2003, but notes the forces have struggled with sectarianism and faced challenges in countering ISIS.
3) Iran has also played a significant role in arming and advising Iraqi security forces and Shiite militias in their fight against ISIS, expanding Iranian influence in Iraq.