Paying their respects: Parisians outside the Charlie Hebdo offices the day after the attack. Photograph: Marc Piasecki/Getty

Each time crusaders triumphed over Muslims in the Middle Ages, bells pealed from the spires of Christendom. The bells of Notre Dame Cathedral tolle(...)

An Egyptian man pleaded guilty in New York today to charges stemming from the deadly 1998 bombings of US embassies in Kenya and Tanzania that killed 2(...)

Al-Qaeda leader Ayman al Zawahri announces the formation of an Indian branch of his militant group yesterday. Photograph: Reuters

Al-Qaeda leader Ayman al-Zawahiri has launched a new branch of his global Islamist extremist movement on the Indian subcontinent to wage jihad in a(...)

Journalist: James Foley films an attack on Muammar Gadafy’s home in Sirte, Libya, in 2011. Photograph:  John Cantlie/Getty

They had spent many dark months together, at times shackled to one another by their youthful captors, several of whom taunted them with European accen(...)

Self-elevated: Abu Bakr al-Baghdadi. Photograph: AP Photo/Iraqi InteriorMinistry

He’s considered the new Osama bin Laden, the most prominent leader of Sunni Muslim Salafists and jihadis. In recent weeks, Abu Bakr al-Baghdadi stu(...)

A member loyal to Isis waves a flag of allegiance to the militant group, in Raqqa. Photograph: Reuters

Islamist militants, who have declared an Islamic “caliphate” in an area straddling Iraq and Syria, trumpeted the declaration in several videos. (...)

Iranian president Hassan Rouhani said the Islamic Republic “will not tolerate this violence and terrorism . . . we will fight and battle violence and extremism and terrorism in the region and the world”. Photograph: Umit Bektas/Reuters

Iran has reportedly intervened in the Iraq conflict, deploying a branch of the Revolutionary Guards to bolster Iraqi government troops who have bee(...)

Isis commander Abu Bakr al-Baghdadi, shown in a US state department wanted poster. Photograph: Reuters

In the scheme of prominent jihadi leaders, Abu Bakr al-Baghdadi, leader of the Islamic State of Iraq in Syria (Isis), is among the most mysterious.(...)

Iraqi security force presonnel detain suspected members of the Islamic State in Iraq and Syria in Jurf al-Sakhar. Isis is the most brutal and feared of the radical jihadi movements spawned in the Levant since the 2003 US invasion of Iraq. Photograph: Mushtaq Muhammed/Reuters

The Islamic State in Iraq and Syria (Isis) is the most brutal and feared of the radical jihadi movements spawned in the Levant since the 2003 US invas(...)

Al Qaeda chief Ayman al-Zawahiri has called on Muslims to kidnap Westerners, particularly Americans, who could then be exchanged for jailed jihadists. Image: SITE Monitoring Service via Reuters TV.

Al-Qaeda chief Ayman al-Zawahiri has called on Muslims to kidnap Westerners, particularly Americans, who could then be exchanged for jailed jih(...)