Obama says Islamic state will loose

President Barack Obama has said Islamic State (IS) militants "will lose" as he asks Congress to formally authorise military force against them.

"Our coalition is on the offensive. Isil [IS] is on the defensive, and Isil is going to lose," he said.
He warned against dragging the US into another prolonged ground war and called on lawmakers to show a united front.
The US has carried out air strikes against IS since last year, in a coalition with other nations.
It's the first time a US president has sought Congressional approval to use military force since President George W Bush in 2002, ahead of the invasion of Iraq.
In a White House address, he said the draft authorisation did not change the mission's core objective to "degrade and destroy" IS.

Islamic State has its stronghold in Raqqa, Syria

Flanked by the Vice-President Joe Biden, and the US secretaries of state and defence at the White House, Mr Obama said this did not signal an "endless war".
He said he was "convinced that the United States should not get dragged back into another prolonged ground war in the Middle East" but said fighting IS would take "some time".
Backing from Congress would send a powerful message that the US was united in its opposition, he said.
"Make no mistake. This is a difficult mission," Mr Obama said. "But our coalition is on the offensive. ISIL is on the defensive, and ISIL is going to lose."
Wednesday's draft proposal would repeal Mr Bush's 2002 Authorization for Use of Military Force (AUMF) but would leave in place the 2001 resolution that was approved after the 9/11 terror attacks in order to search for al-Qaeda operatives.