The New York Times did not report the real reason for the cancellation of the summit today

"The six members of the Gulf Cooperation Council (GCC) called on the Arab League to cancel the annual summit, rescheduled from March for next month in Baghdad. The request came in the wake of complaints by Bahrain — Saudi Arabia’s GCC ally — of Iraqi interference with the Shia of Bahrain, urging them to call for political reform of the ruling Sunni monarchy.  “Saudi Arabia conditioned holding the summit in another country or cancelling it, due to the statement given by Prime Minister Nouri Al-Maliki that criticised the Saudi role in Bahrain and considered it as interference in Bahrain's internal affairs,” Al-Azzawi said. He added that the Saudis felt offended by Al-Maliki's statement, which took the same position as that of Iran on the issue."