Our destiny is to move beyond Earth

Space exploration, robotic and manned, deserves public funding

Warmer US winter hits natural gas prices

Increased supply also depresses market

US-Cuba ‘war’ ends with no clear winners

Obama seen as acting unilaterally in decision to ease sanctions

Oil heavyweights split on rally catalyst

Opec leader and shale chief at odds on where output cuts will fall

North Korea threatens attacks on US

Pyongyang warns of strikes in response to hack allegations

Winning White House race will cost $1bn

A crowded field is already jostling to replace Obama in 2016

US struggles to respond to hack of Sony

Obama tones down the rhetoric against North Korea

Ingram Pinn slideshow

Obama’s Cuba-led pivot in Latin America

The US has turned the table on many of its critics in the region

On Cuba, no side has got it right

It is strange that the island is still a focal point of US foreign policy, says Cardiff Garcia

Obama rebukes Sony for scrapping film

Pyongyang urges joint investigation after FBI accuses it of cyber attack

Amy Pascal, studio boss in real-life drama

Sony Pictures hack jeopardises co-chair’s job and free speech

Obama breaks free of domestic shackles

After several foreign policy successes, a decent legacy looks possible

What does Elizabeth Warren want?

The Senator’s anti-Wall Street campaign is gripping Washington

Marijuana becomes a proper yuletide gift

Few consumer goods have enjoyed as much free advertising as pot

Sony hack a US ‘national security matter’

White House debates response to ‘serious’ cyber attack by ‘sophisticated actor’

Tantalising prospect of Bush-Clinton race

Dynastic presidential battle may be the most competitive on offer

Sony hack leaves US looking powerless

Saying North Korea is linked to attack exposes the dilemma facing Washington

Forces reshaping world in two words

Splintering of old order is most stark in the Middle East

Cuba detente latest sign cold war is over

US debate had shifted from what the island does beyond its borders to what it does within them, writes Richard Haass

Fed signals tightening by mid-2015

New ‘patient’ judgment replaces forecast of low rates for ‘considerable time’

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