A US stealth bomber approaches for mid-air refuelling: stealth aircraft are one of the US Defense Advanced Research Projects Agency’s biggest success stories. Photograph: Reuters/Hyungwon Kang

The US government’s Defense Advanced Research Projects Agency (Darpa) is involved in many different areas because the creation and prevention of strat(...)

Pedestrians in downtown Vilnius, Lithuania. The country becomes the 19th nation to adopt the euro on January 1st, and the likelihood of economic and geopolitical security looms large for many. (Photograph: Maciek Nabrdalik/The New York Times)

If anyone still has good reasons for joining the euro, it is the people bundled against the cold of this snow-dusted capital. The plunge of the ruble(...)

An employee looks out over an oil refinery  in Nizhny Novgorod, Russia. The drop in oil prices is driving a sharp recession in the country. Photograph: Andrey Rudakov/Bloomberg

Slumping oil prices have put Russia’s economy on course for a sharp recession and double-digit inflation next year, government ministers said, as auth(...)

President Ronald Reagan and Ms Nancy Reagan during their visit to Ireland. President Reagan is drinking a pint of Guinness in the Ronald Reagan pub in Ballyporeen, Co Tipperary. File photograph: Pat Langan/The Irish Times

It was a time when a Labour party in coalition with Fine Gael took a kicking in European elections, two cases involving the deaths of babies shook the(...)

Russian president Vladimir Putin has invited North Korean leader Kim Jong-un to Moscow next year, a Kremlin spokesman said. Photograph: Reuters

Russian president Vladimir Putin has invited North Korean leader Kim Jong-un to Moscow next year to mark the 70th anniversary of the Soviet defeat of(...)

American aid worker Alan Gross, a former Cuban prisoner released on humanitarian grounds, speaks at a news conference with his wife Judy Gross in Washington DC yesterday. Photograph: Andrew Harrer/Bloomberg

President Barack Obama said the US has chosen to “cut loose the shackles of the past” by normalising relations with Cuba and re-opening economic ties(...)

A restored T-72 tank stands as a memorial commemorating for the capture of the town Shusha beside the street between Stepanakert and Shushi  in Nagorno-Karabakh. File photograph: Matthias Schumann/Getty Images

In Stepanakert, the capital of Nagorno-Karabakh, polite officials stamped our passports and wished us a pleasant stay. They’re happy to welcome(...)

Inventor Mikhail Kalashnikov, who died last year,  reportedly wrote to the patriarch of his church to ask should he seek forgiveness for creating a weapon that had caused so much death. Photograph: Oleg Nikishin/Getty Images.

Equipped with a shiny new logo, shrugging off US sanctions and claiming its guns are “protecting peace”, the Russian weapons manufacturer Kalashnik(...)

The decline in oil prices should be helpful to the world economy, albeit with caveats. Photograph: Getty/iStockphoto

What does the decline in oil prices mean for the world economy? The answer depends on why it has happened and how long it might last. But overall it s(...)

Jose Mourinho: Chelsea are not at the top because of an easy run, they are there because their rounded squad has been improved due to  astute buys by a  superb manager.

On August 16th Alexis Sanchez, all €40 million of him, made his Arsenal debut in a 2-1 victory over Crystal Palace. Twelve weeks later, the man who bo(...)