premise: Iranian Supreme Leader Seyed Ali Khamenei said here on Tuesday that there was no limit for Iran on the development of cooperation with Iraq, the official IRNA news agency reported.
  "Iran is proud of Iraq's progress, security, independence and national strength and there is no limit on the development of cooperation with Iraq," Khamenei was quoted as saying at a meeting with visiting Iraqi President Jalal Talabani.
  Khamenei said Iran and Iraq enjoyed long-standing religious, cultural and historical affinity, stressing that Iran was pleased with the political process for the establishment of a democratic government in Iraq.
  Khamenei called on the Iraqi nation to "leave behind the current ordeal" and foster national solidarity in order to pave the way for setting a timetable for the withdrawal of occupation forces.
  "Iraqi people will be exposed to the US pressure if the government and Iraqi people fail to strengthen their unity," Khamenei said.
   What can be expected to happen if Iraqi government and people fail to strengthen their unity?
hypothesis: limit on the development of cooperation with Iraq