Foreign Secretary William Hague has told ITV News Political Editor Tom Bradby that Iraq faces a "severe challenge to its existence as a state".
William Hague tells ITV News Iraq faces a severe challenge 'including to its existence as a state.'
But he completely rules out military intervention; 'we are not planning that, we're not contemplating that, we are not having meetings...'
More top news
The reason for the shooting is unclear, but local media have reported it may be a settling of scores between criminals.
Most parts of the country will experience near unbroken sunshine after a chilly start to the day.
As the investigation into Khalid Masood continues, former acquaintances tell of violent incidents in the murderer's past.