The father of 8-year-old bomb victim Martin Richard had tried to shield the eyes of the boy's brother, 12-year-old Henry, as the carnage unfolded around them.

Still stunned and with tears streaming down their faces, the people of Boston rose to their feet in defiance yesterday as President Barack Obama promised to track down those responsible for the bombings at Tuesday's marathon.

An eerie but as-yet-unverified photograph has emerged of what appears to be one of the Boston bombing suspects (circled in red) just metres from the 8-year-old victim Martin Richard (circled in blue).

Extra alertness after the Boston bombing will deter attacks, but the nature of big public events means they remain exposed to danger.

The recipe is straightforward. First you take a small quantity of explosives made from cleaning fluid and place it in a pressure cooker with a liberal helping of small metal objects, such as ball bearings or nails.

One of the most graphic images to emerge from the Boston Marathon bombings was of a young man who appeared to have lost both his legs.

British police are reviewing security plans for Sunday's London Marathon, the next major international marathon, because of the Boston bombings.

Police in Delhi have arrested a New Zealand Sikh community leader over charges including alleged involvement in seditious activities and attempted murder.

Confronted by public protest and fierce congressional questioning, CIA director-designate John Brennan strongly defended the Obama Administration.

For many years Mokhtar Belmokhtar was little more than a footnote in the intelligence reports analysing the increasingly muscular presence of Islamist groups in Saharan Africa.

Canada is investigating a claim by the Algerian Prime Minister that one of its citizens co-ordinated the terrorist raid at the Saharan gas plant.

The thriller Zero Dark Thirty hunted down top spot at the North American box office - and easily won it.

Three weeks before the ceremony and the [Olympic Stadium] was packed with thousands of people all doing things impressively.

The British-Iraqi man killed in last month's quadruple Alps shooting had access to a bank account linked to Iraq dictator Saddam Hussein.

The parents of triplets who died in the Doha mall fire have made an emotional plea for justice after the trial over their deaths was delayed for a third time.

The hearing into the fatal fire at Doha's Villaggio mall which killed 19 people including three Kiwi triplets has been postponed for a third time.

A service to mark today's 10th anniversary of the Bali bombing in which three New Zealanders died was a moving reminder of the tragedy, Foreign Minister Murray McCully says.

As Bali commemorates 10 years since twin bombings killed 202 people, relatives of the dead cling to memories of their loved ones - and vow that terrorism will never win.

The government is monitoring the security situation in Bali, after Indonesian police warned of a plot to attack dignitaries at the 10th anniversary of the bombings.

The father of Kiwi triplets killed in a Qatar mall fire says it is distressing to see stories circulating about the fire being an act of terrorism without any facts to back them up.

Journalists and academics have questioned a Saudi news agency that claims the Qatar mall fire that killed New Zealand triplets was an act of terrorism.

Former NZ diplomat Warren Searell called Damascus home until the Arab spring made life far too dangerous. This is his story.