11.30pm BST

We're going to wrap up our live blog coverage for the day. Here's a summary of where things stand:

• Isis fighters and allied groups took new territory in northern and western Iraq, including the city of Tal Afar, along a main route into Syria.

• Isis claims that it had killed 1,700 Iraqi soldiers were questioned. But videos of Isis executions of Iraqi security forces stirred outrage. Some diagnosed a broader sectarian conflict to come.



• Forces in Iraq engaged Isis and prepared for a larger confrontation. These included the Iraqi army, Kurdish peshmerga, Shia militias, Iranian fighters, volunteers and security forces.

• Iranian and US officials discussed the Iraq situation on the sidelines of nuclear talks in Vienna. Both sides ruled out military cooperation, although US secretary of state John Kerry earlier in the day left the option open.

• Kerry also said US air strikes in Iraq were an option. President Obama and national security advisors planned to meet Monday evening on Iraq.

• An Iraqi army helicopter was reportedly shot down during clashes with militants west of Baghdad.

• Hundreds of thousands of Iraqis were unable to return to their homes after they fled the Isis advance last week. A few of their stories are here and here.