(CNN) -- Despite airstrikes and international outrage against ISIS militants, the terror group is overrunning Iraqi forces and slowly marching on toward a province on Baghdad's doorstep. And as alarming developments piled up over the weekend, Iraqi forces threatened to flee if the U.S. military does not intervene. Here are where things stand: On Baghdad's doorstep ISIS fighters are making headway against poorly equipped local forces. The Islamist extremists appear set to take Kobani, a key Syrian town along the Turkish border. Next up: a province on Baghdad's doorstep. Iraq's Anbar province pleaded for U.S. ground troops to halt the group's rapid, relentless assault.
@highlight
NEW: The family of captive John Cantlie calls on ISIS to re-establish direct contact
@highlight
The Islamic State in Iraq and Syria is moving fast
@highlight
ISIS attacks send shock waves among Iraqi forces fighting the militants
@highlight
Iraqi forces and Anbar tribesmen threaten to flee if the U.S. military does not intervene
If they're successful, the militants would control three official border crossings between Turkey and @placeholder and a stretch of the border about 60 miles (97 kilometers) long.