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Islamic State crisis: Obama threatens action in Syria Islamic State crisis: Obama threatens action in Syria
(35 minutes later)
President Obama says he will not hesitate to take action against Islamic State (IS) militants in Syria as well as Iraq. US President Barack Obama says he will not hesitate to take action against Islamic State (IS) militants in Syria as well as Iraq.
In a nationally televised speech outlining his strategy against IS, he said that any group that threatened America would "find no safe heaven".In a nationally televised speech outlining his strategy against IS, he said that any group that threatened America would "find no safe heaven".
He also announced that 475 US military personnel would be sent to Iraq but said they would not have a combat role.He also announced that 475 US military personnel would be sent to Iraq but said they would not have a combat role.
IS controls large parts of Syria and Iraq after a rapid military advance.IS controls large parts of Syria and Iraq after a rapid military advance.
Its fighters have become notorious for their brutality, beheading enemy soldiers and Western journalists on video.
President Obama's anti-IS strategy
The US has launched over 150 airstrikes against the group in Iraq and provided arms to Iraqi and Kurdish forces fighting against IS.
President Obama vowed that America would lead "a broad coalition to roll back" IS.
"Working with the Iraqi government, we will expand our efforts beyond protecting our own people and humanitarian missions, so that we're hitting Isil [Islamic State in Iraq and the Levant - the previous name for IS] targets as Iraqi forces go on offence" he said.
He said he would welcome congressional approval for the fight against IS but said that he had the authority to act without it.
Analysis: Jon Sopel, BBC News, Washington
For the first time, Islamic State targets on the ground in Syria will be in the crosshairs of American pilots. The president told the American people: "I have made it clear that we will hunt down terrorists who threaten our country, wherever they are." But he was equally emphatic that the combat on the ground would happen without US troops. Instead the US will ramp up its military assistance to the Syrian opposition.
But the president was also at pains to express what this wasn't. "We will not get dragged into another ground war," he insisted. He said that America would lead a broad coalition to roll back this terrorist threat and would not be acting alone. There were two cautionary notes - the first on timescale and also that this would not be risk-free to American servicemen and women. Action is going to start: who knows when it will be mission accomplished.
Coalition building
Last year President Obama abandoned plans to launch airstrikes in Syria against government forces after congressional opposition.
In his speech, he ruled out working with President Bashar al-Assad of Syria, despite the fact that his forces are also engaged in fighting IS.
"In the fight against Isil, we cannot rely on an Assad regime that terrorises its people: a regime that will never regain the legitimacy it has lost" he said.
Instead, he said, the US would seek to strengthen the Syrian opposition.
US Secretary of State John Kerry is already in the Middle East trying to build a coalition against IS.
Mr Kerry was in Iraq on Wednesday, where he praised the new government's plans to involve more Sunnis in government and heal ties with the Kurds.
The US military has carried out scores of air strikes in Iraq, where it can claim the support of the government.
Mr Obama has already authorised $25m (£15m) in aid for the Iraqi military.