“The evidence was clear on paper and we could repeatedly prove it, but people wanted to see it demonstrated step by step through the lifecycle of the horse.” Donal Ryan, with Emmeline Hill and Jim Bolger. Photograph: Nick Bradshaw

Former US defence secretary Donald Rumsfeld was pilloried for his use of the phrase “unknown unknowns” during a press briefing in 2002. In fact, th(...)

How will markets go? Forecaster Robert Prechter warned that the Dow Jones would fall below 1,000 in 2010 – it has spent most of 2015 around the 18,000 level. Photograph: Jin Lee/Bloomberg

Market forecasting is a tricky business, with countless studies indicating we should be sceptical towards those who purport to know what the future ho(...)

Sudanese president Omar al-Bashir returns from South Africa to Khartoum on Monday, avoiding arrest over war crimes charges. Photograph: Marwan Al/EPA

Whatever gloss the International Criminal Court (ICC) places on Omar al-Bashir’s deft evasion of two of its arrest warrants yesterday, the bottom line(...)

‘The president descended from the mountain for half an hour on Thursday evening, materialising at Nationals Park to schmooze with Democrats and Republicans at the annual congressional baseball game.’ Photograph: Aude Guerrucci/Getty Images

On Saturday mornings, I love to watch reruns of the television Western The Rifleman. Each show is a little moral fable, with Chuck Connors’s widowe(...)

World-renowned economist Dr Arthur Laffer speaking at the Davenport Hotel in Dublin: “Ireland has an opportunity to really lead the world in economic growth and prosperity.” Photograph:  Shane O’Neill/Fennell

Ireland is a paragon of economic virtue when it comes to corporation tax but certifiably “crazy” as far as income tax goes, according to US economist (...)

Jeb Bush’s  foreign policy team is led by people who were directly involved in concocting a false case for war. Photograph: Alvin Baez/Reuters

Surprise! It turns out there’s something to be said for having the brother of a failed president make a run for the White House. Thanks to Jeb Bush, w(...)

George W Bush (left) with Jeb Bush in 2006. Photograph: Jim Watson/AFP/Getty Images

It isn’t about what we know now. It’s about what we knew then. It is simply not true, as Republican presidential aspirant Scott Walker said on Friday,(...)

Jeb Bush: though he is more apt to do his homework, he’s unformed on foreign policy, like his brother – except that his brother was elected before 9/11. Photograph: Jabin Botsford/New York Times

James Baker can take credit for two presidencies and one vice-presidency in the Bush family. So it’s a tad ungracious for a Bush to take Baker to task(...)

Jeb Bush: the last two presidents in his party were his father and brother, and his brother crashed the family station wagon into the globe. Photograph: Jim Young / Reuters

I had been keeping an open mind on Jeb Bush. I mean, sure, as Florida governor, he helped his brother snatch the 2000 election. And that led to two de(...)

Democratic senator from California Dianne Feinstein speaks to the media outside the Senate chamber after the release of a report on Bush-era CIA torture policies. Photograph: Jim Lo Scalzo/EPA

The word “torture” is mentioned on 82 of the 525 pages of a US Senate committee’s report into the CIA’s use of torture in interrogations of al-Qaeda s(...)