From the desk of John Micklethwait, Editor - 29th January 2015

This week we return to the euro—and Greece's challenge to Germany. A Grexit is now possible, our cover leader argues, but there is also a chance that the election of Alexis Tsipiras could lead to reform in Europe. This week is also the last time I will send out one of these e-mails. Next week Zanny Minton Beddoes inherits my desk. I am sure there will be a notable improvement in both the style and content of these missives, and I hope you will all keep reading—as I will do  John Micklethwait, Editor-in-Chief Thursday, January 29, 2015 Sucking up to the Saudis How the West should deal with the new king READ MORE » Is American football doomed? Some thoughts on the Super Bowl READ MORE » An editor's valedictory A call to arms for liberals, and a final egotistical flourish READ MORE » Politics this week Argentina’s president, Cristina Fernández de Kirchner, announced a shake-up of the country’s intelligence service following the unexplained death of the prosecutor who was investigating the bombing in 1994 of a Jewish centre in Buenos Aires. The prosecutor, Alberto Nisman, who died from a gunshot, had accused the president of trying to thwart the investigation. Ms Fernández suggested that he had been fed false information by the intelligence service. The journalist who broke the news of Mr Nisman’s death, Damian Pachter, left the country claiming he feared for his safety SEE ARTICLE » MORE FROM: POLITICS THIS WEEK » Business this week The superlatives came fast to describe Apple’s earnings for the last three months of 2014. Revenue grew by 30% compared with the same quarter in 2013, to $74.6 billion, from which it netted income of $18 billion. That is the biggest-ever quarterly profit reported by a company, smashing the previous record held by Exxon Mobil since 2012 of $15.9 billion. Apple was boosted by demand for the iPhone, especially in China, Hong Kong and Taiwan; sales there were up 70%. Having silenced the doubters after he took over from Steve Jobs, Tim Cook, the chief executive, was modest, saying the quarterly figures were “hard to comprehend” SEE ARTICLE » MORE FROM: BUSINESS THIS WEEK » Subscribe Subscribers can enjoy each week's full issue of The Economist in print, at Economist.com or via The Economistapps. Subscription offers » Follow The Economist