Iraqi political parties reached an agreement on Sunday on the bylaws for the functioning of the next government, Iraqi President Jalal TalabaniÂ’s office announced in a statement. The decision marks the second achievement in as many days from the contentious negotiating sessions to form a coalition government, nearly four months after a landmark national election. It followed the announcement on Saturday of a compromise on IraqÂ’s security file.Before the back-to-back breakthroughs, talks on forming a unity government among Shia, Sunni and Kurdish parties had been deadlocked. TalabaniÂ’s office said that a two-thirds cabinet majority would be required for any decisions on the national budget, financial agreements, contracts over 50 million dollars, border issues, security, high-ranking military promotions and questions concerning national sovereignty. Any issues involving the presence of US-led coalition forces in Iraq would also require a two-thirds cabinet majority. The requirement for more than a simple majority dilutes the power of the dominant conservative Shia bloc which holds nearly half the seats in the 275-member parliament.