Iraq: How hard will the battle in Mosul’s old city be?

Iraq: How hard will the battle in Mosul’s old city be?

Cars burnt and destroyed by clashes are seen on a street during a battle between Iraqi forces and Islamic State militants, in Mosul, Iraq March 16, 2017. REUTERS/Thaier Al-Sudani

Iraq: How hard will the battle in Mosul’s old city be?