I think al-Abadi realizes that his nation has no chance of surviving if he cannot integrate the Sunni's into his government. He's coming into a serious crisis, so I think that if he can successfully eliminate IS from Iraq with a coalition, then the world can look forward to further improvement in Iraq under him. The threat posed by IS has the opportunity to unite Iraq behind al-Abadi, or crush him.
I think al-Abadi realizes that his nation has no chance of surviving if he cannot integrate the Sunni's into his government. He's coming into a serious crisis, so I think that if he can successfully eliminate IS from Iraq with a coalition, then the world can look forward to further improvement in Iraq under him. The threat posed by IS has the opportunity to unite Iraq behind al-Abadi, or crush him.