Iraq conflict: All options open to fight insurgents - Obama

US President Barack Obama says his government is considering all options to help fight Islamist militants in Iraq, including possible intervention by the US military.

But the White House also insisted it had no intention of sending ground troops.

ISIS militants have already taken over large parts of northern Iraq, and are believed to be planning to push further south to the capital, Baghdad.

Rajini Vaidyanathan reports from Washington.