Coalition forces have now carried out 110 strikes to save the Kurdish town of Kobani.
Ahmed Abu Khattala faces an 18-count indictment, including multiple murder counts.
Leaders also discussed the need for non-military, regional approaches to countering ISIS.
The president said a number of countries "have not yet stepped up."
"There are no quick fixes involved," Obama said after meeting coalition military leaders.
"We have some tough issues to resolve," the secretary of State said.
Johnson said there is "no credible intelligence" the group is planning a biological attack.
Twin statements came on six-month anniversary of kidnapping of hundreds of girls.
There's much we don't know in Iran and Iraq, but ignorance is no obstacle to strong conviction.
The meeting will include defense chiefs from some 20 nations.
The Pentagon calls climate change a "threat multiplier" in new "adaptation roadmap."
Rubio said Obama wants to be able to "brag about disengaging" from the Mideast.
Democrats still rank the economy as the top midterm election issue.
Airstrikes have failed to halt fighters advancing on Kobani, a Kurdish town.
“I don't think anybody intentionally made a decision not to help these people," Panetta says.
The pregnant Iraq War veteran lawmaker has been in the armed services for 23 years.
State Department wants info on location of Al Qaeda in the Arabian Peninsula's leaders.
Sen. Mark Warner (D-Va.) says he is "concerned" by controversial changes to the military's...
ISIS militants are threatening to capture the Turkish-Syrian border town of Kobani.
Rep. Steve Southerland (R) said in an ad that Gwen Graham was weak on national security.
“I feel profoundly let down by our elected officials," Laura Poitras said.
In a 20-page report released on Monday, the Pentagon details its strategic blueprint to address...
Gen. Ray Odierno admits "we'll have to see what plays out over the coming days" with ISIS.
Defense secretary says climate change could "create serious risks to stability."