Ex-Daily Mirror political editor and spin doctor Alastair Campbell returns to the Leveson inquiry to discuss politicians and their relationship with the "putrid" media he now distances himself from.

A double agent allegedly recruited by MI5 and MI6 was a British passport holder, according to American media reports.

More than 20 bombs hit cities and towns across Iraq, killing at least 36 and wounding almost 150, but analysts tell Channel 4 News the situation is not deteriorating.

A series of bomb blasts erupt across Iraq killing at least 43 and wounding 232, raising fresh fears ahead of an Arab League summit in Baghdad next week.

Several bombs go off in mainly Shia Muslim areas of the Iraqi capital Baghdad leaving at least 67 people dead and many injured. The attacks come as sectarian tensions escalate in Iraq.

Defence analyst Anthony Tucker-Jones assesses where conflicts are most likely to erupt over the next 12 months.

The death toll from the Baghdad bombings has risen as President Obama's opponents accuse him of leaving a dangerous vacuum in Iraq.

Iraq faces an uncertain future as the last US military units hand over control to local forces, amid continuing political uncertainty and sectarian violence.

Defence Secretary Leon Panetta says lives were not lost in vain as the US formally end operations in Iraq, ahead of a complete withdrawal of troops after nearly nine years of war.