Baghdad, Iraq (CNN) -- U.S. President Barack Obama on Tuesday authorized additional troops be deployed to Iraq to protect American diplomatic facilities and personnel in Baghdad. The 350 troops are being sent at the request of the U.S. Department of State to beef up security, an appeal that comes as the violence mounts as Iraqi security forces battle ISIS fighters and their Sunni militant allies. "The request he approved today will allow some previously deployed military personnel to depart Iraq, while at the same time providing a more robust, sustainable security force for our personnel and facilities in Baghdad," according to a statement released by the White House.
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NEW: Obama approves request for more U.S. troops in Baghdad, White House says
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Scores storm the Iraqi parliament building
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Families want to know the whereabouts of loved ones after a June ISIS attack near Tikrit
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ISIS overran a base formerly known as Camp Speicher and says it killed 1,700 Iraqi forces
The killings at @placeholder are among the worst atrocities claimed by ISIS in Iraq.