Fears of 'human catastrophe' in Fallujah as Iraqi forces target IS

An aid group has warned of an unfolding "human catastrophe" in Fallujah as Iraqi forces press to dislodge Islamic State militants from the city, where conditions are worsening for tens of thousands of trapped civilians.

IS fighters launched a fierce counterattack on the southern edge of the city, slowing the progress of the elite Iraqi counter-terrorism troops, and the militants reportedly corralled civilians into a single neighbourhood for use as human shields.