(Reuters) - Iraq's Prime Minister-designate Haider al-Abadi said on Monday that talks on forming a new government were constructive and predicted a "clear vision" on a unified administration would emerge within the next two days, state television reported.

Abadi is tasked with forming a power-sharing government that can ease sectarian tensions and counter Islamic State militants who pose the biggest security threat to Iraq since a U.S.-led invasion toppled Saddam Hussein in 2003.