See how the world is adapting in the fight against global terrorism

Kurds hone battlefield skills against Isis

Jihadists’ guerrilla tactics shock peshmerga fighters

Comment & Analysis

Islamic State of Iraq and the Levant militants in Iraq's Nineveh province ©AFP
Surge of al-Qaeda’s offshoot leaves society questioning itself
– Roula Khalaf
The entrance to Camp 5 and Camp 6 at the US military's Guantánamo Bay detention centre ©AP
The notorious prison has seen a mere handful of convictions as detainees grow older in legal limbo
– Richard McGregor
As al-Qaeda splinter group the Islamic State of Iraq and the Levant extends its reach southwards, the government appears more paralysed than ever
– Roula Khalaf

US signals escalation in Isis fight

Militant group ‘beyond anything we’ve seen’, says defence secretary

Use Assad to defeat Isis, says Rifkind

Senior British MP warns against being ‘squeamish’ about methods

Mystery of drop into Isis military base

Raid on camp with secret prison may have been US rescue

Defeating Isis likely to take years, warn analysts

Taking on insurgents will be far harder than fighting al-Qaeda

Extreme violence lies in Isis DNA

Successor to al-Qaeda in Iraq espouses same extreme violence

Cameron tackles jihadi threat to UK

PM cuts short holiday as identifying Foley killer becomes top priority

Isis claims to behead US journalist

UK foreign secretary says video appears genuine

Cameron fails to calm Isis policy doubts

Some dismayed by a lack of coherent thinking over the Middle East

Britain’s options to fight Isis

PM signals more muscular interventionist stance against Isis

Isis continues to make gains in Syria

Assad and rival rebels face daunting task to rein in Islamists

PKK ‘terrorists’ crucial to Iraq’s Isis fight

Kurdistan Workers’ party militants now fight on same side as US

Indonesia prepares for Isis backlash

Counter-terror measures intensify as fears of violence rise

Air strikes do little to impede Isis

Sophisticated military system puts western efforts in dim light

Pro-Isis leaflets distributed in London

Spread of material a growing concern for intelligence chiefs