NEW : U.S. defense forces : Iraq 's largest province in trouble amid ISIS onslaught . ISIS controls vast swaths of Iraq , Syria and is threatening to take even more land . Iraqi official : ISIS fighters in Anbar province , near Baghdad , may cut off Iraqi forces . Syria : ISIL now controls about half of Kobani , a Syrian city near the Turkish border .
NEW : U.S. defense secretary : Iraq 's Anbar province in trouble amid ISIS onslaught . ISIS controls vast swaths of Iraq , Syria and is threatening to take even more land . U.S. official : ISIS fighters in Anbar province , near Baghdad , may cut off Iraqi forces . Group : ISIS now controls about half of Kobani , a Syrian city near the Turkish border .