FALLUJAH (AFP) - A militant posing as a construction worker killed an Iraqi MP and six others on Tuesday, wrapping his arms round the lawmaker before blowing himself up, as a political crisis engulfs Iraq. The killing of Ayfan Saadun al-Essawi comes just two days after Finance Minister Rafa al-Essawi, a fellow Sunni and a member of the same tribe and political bloc, escaped an apparent assassination attempt as his convoy passed near where Tuesday’s attack took place. No group immediately claimed responsibility, but Sunni militants often target officials and high-profile individuals in a bid to destabilise the government and push the country back towards the bloodshed that raged from 2005 to 2008.