At least 500 Britons are thought to have taken up arms in Syria and Iraq, while only a dozen American-born nationals have been identified as Islamic State fighters. What is behind the difference?
We don't need to see the brutal footage of the murder of journalist James Foley to know that his death was wrong. But by refusing to share it, we can diminish its propaganda value.
Two men plead guilty to travelling to Syria to join al-Qaeda militants, after they were turned in to police by their worried parents. Home Affairs Correspondent Darshna Soni reports.
The US Transportation Security Administration will not allow mobile phones or other electronic devices on US-bound planes at some overseas airports if the devices are not charged.
Al-Shabaab militants, who threatened to step up attacks during the Muslim fasting month of Ramadan, say they were behind a blast that killed four people near the Somali parliament building.
Religious leaders call on British Muslims not to go to Syria or Iraq for jihad, amid rising fears of radicalisation in the conflicts which could spread across the globe.
The leader of an al-Qaeda faction in Yemen has urged Muslims to back rival Islamist faction Isis - evidence of a deep split in the ranks of the extremists.
Ibrahim Hassan Al-Asiri can lay claim to being the most world's most dangerous man. And he has been linked to bomb fears which have seen the US step up airport security.