British journalist John Cantlie purportedly shown as captive in Islamic State video

BEIRUT - A man identified as British journalist John Cantlie has purportedly appeared as a captive of Islamic State militants in a video posted by the organization's supporters online.The Islamic State group, which controls territory in Syria and Iraq, has already beheaded two American journalists and one British aid worker in recent weeks in what it said was reprisal for US air strikes against it in Iraq.But in the new roughly three-minute video, the man identified as Cantlie appears in good health and promises to "convey some facts" in a series of "programs," suggesting there would be further installments.