The war in Syria is changing every day.

What started as an uprising against the Assad regime became a sectarian civil war.

And now, Al Qaeda and the radical Islamist group ISIS have changed the war’s dynamics yet again, adding a volatile second front to this intractable conflict, and raising the stakes of the war even higher.

In Syria’s Second Front, journalist Muhammad Ali uncovers firsthand how the revolution has devolved into a fight between rebels and extremist factions claiming allegiance to Al Qaeda.

How are the jihadists changing Syria’s war? Where are they coming from? What are their goals? How have they raised the stakes of the war’s outcome? Is there any end in sight?

We’ve asked correspondent Muhammad Ali and McClatchy reporter Roy Gutman — who recently published a series of articles on ISIS in collaboration with FRONTLINE — to join us for a live chat to answer those questions and take yours.

They’ll be joined by guest questioner David Kenner from Foreign Policy Magazine.

You can leave a question in the chat window below, and come by at 1 p.m. ET on Feb. 12 to join the live discussion.

We’d like to thank McClatchy and Foreign Policy for partnering with us on today’s chat.