Militants , who now number up to 300 , are ` ` increasingly capable , '' U.S. officials says . Work for Baiji oil refinery continues , deputy prime minister for energy affairs says . John Kerry visits Irbil to speak with Kurdish leaders about the Iraq crisis . The U.S. is ` ` extraordinarily hampered '' without a new Iraqi government , he says .
Militants , who may number up to 10,000 , are `` increasingly capable , '' U.S. official says . Fight for Baiji oil refinery continues , deputy prime minister for energy affairs says . John Kerry visits Irbil to speak with Kurdish leaders about the Iraq crisis . The U.S. is `` extraordinarily hampered '' without a new Iraqi government , Kerry says .