In 2010 cartoonist Sarah Glidden tagged along with journalist friends as they traveled to Turkey, Iraq and Syria to report on those displaced by the war in Iraq. "Rolling Blackouts" features her hand-drawn observations.
Few doubt that the US-backed alliance will beat the Islamic State out of the Iraqi city of Mosul. But solving that problem is expected to unleash new struggles in Iraq and beyond. Here are some of the biggest challenges ahead.
Donald Trump has repeatedly said that Barack Obama and Hillary Clinton are the co-founders of ISIS. He later tweeted he was just being sarcastic. But where did ISIS come from and what role, if any, did the US play in its rise?