"I will seek authorisation for the use of force from the American people's representatives in Congress," President Obama said.
He said Congressional leaders agreed to "schedule a debate and then a vote as soon as Congress comes back in session."
More top news
The White Helmets volunteer was brought to tears as he held the one-month-old child, after digging for hours to save her life.
A 14-year-old boy has been charged after a man was shot dead and three people were injured in a shooting at a US primary school.
Sunshine with blustery showers and longer downpours