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• The text of an article reported Barack Obama as proposing $4tn in spending cuts. While this is the sum by which he hopes over time to cut the accumulated US federal debt – currently standing at $14.3tn – about $2tn out of that $4tn is meant to come from cuts to spending; the rest from other sources. Our article also referred to the $14.3tn as the US deficit. The deficit is the annual shortfall between government spending and income. The US deficit for 2011, for instance, is projected at $1.5tn. Whatever the final figure, it will, like past deficits, contribute to the overall pool that is the US federal debt (Obama calls for $4tn in budget cuts over 12 years, 14 April, page 21).
• In a profile of an Italian politician, mention was made of John Brennan, described as president of the US National Security Council, a non-existent post. The NSC chairman is the US president. John Brennan is one of the deputy national security advisers (Profile, 14 April, page 21).
• Benjamin Barber, the author of an article examining the role of Saif Gaddafi during the uprising in Libya, is a senior fellow of the US thinktank Demos. For the avoidance of confusion: this is an entirely separate organisation from the London-based Demos (Yes, he's a Gaddafi. But there is still a real reformer inside, 13 April, page 30).