The release of an American journalist in Syria is likely to renew questions about the intentions of different militant groups in Syria and Iraq and how the U.S. should deal with hostage takers.

Journalist Peter Theo Curtis was freed Sunday, days after another U.S. journalist kidnapped in Syria was beheaded by Islamic militants.

Secretary of State John Kerry says Curtis was held by an al-Qaida-linked militant group.

Journalist James Foley was executed by the group Islamic State, which al-Qaida disavowed earlier this year after deeming it too brutal.

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