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Secy. John Kerry's address at the U.N. reminded some people of Colin Powell's case to go to war against Iraq.
A training camp near the ISIS stronghold in northern Iraq became the target of U.S. warplanes. CNN's Jim Sciutto reports.
President Obama visited the U.S. Central Command, which is planning the current airstrike campaign in Iraq.
Barbara Starr reports that the U.S. has begun conducting its first offensive airstrikes southwest of Baghdad.
Testifying before Congress, Gen. Martin Dempsey didn't rule out sending U.S. military advisers in Iraq closer to combat.
The CIA now says there are between 20,000 to 31,500 ISIS fighters operating in Iraq and Syria. CNN's Jim Sciutto reports.
Secretary of State John Kerry speaks about the role of the U.S. in Iraq and building a coalition to defeat ISIS.
Sen. Saxby Chambliss says the brutal terror group poses a direct threat to America.
Are the latest round of airstrikes against ISIS an expansion of the U.S. mission in Iraq? CNN's Barbara Starr reports.