Up to half the food aid in Somalia is routinely diverted to corrupt contractors and militants, a leaked UN report says. Contractors 'divert Somalia aid' Thousands of Greek workers are expected to bring the country to a halt with a second strike in a month over austerity measures. Greeks stage fresh general strike Mexican Carlos Slim overtakes Bill Gates as the world's richest man, according to the Forbes "rich list", with a fortune of $53.5bn. Mexican shakes up world rich list Barack Obama warns that the crisis in quake-hit Haiti is not over, as he meets the country's President, Rene Preval. Obama says Haiti situation 'dire' Chilean tycoon Sebastian Pinera will be sworn in as president, with a major post-earthquake rebuilding effort ahead of him. Chile's new leader to be sworn in Former rebels in DR Congo, now in the army, are running mafia-style extortion rackets in mines, campaigners say. DR Congo mines 'hit by extortion' The UN secretary general asks the world's leading science academies to review the UN's climate science body. Scientists to review climate body Police say 49 people are to be charged with murder following communal violence that left scores of Nigerian villagers dead. Nigeria charges over Jos killings Italy signs a deal with Google to put online the contents of its two national libraries, including works by Dante and Galileo. Google to scan old Italian books An Israeli supermarket chain uses spoof surveillance footage, parodying that of the alleged assassins of a Hamas commander in Dubai, in a TV advert. Israel supermarket uses parody film of Dubai assassins in advert An elephant in a Sydney zoo shocks vets by giving birth to a live baby elephant who appears to have survived labour in a coma in the womb. Baby elephant shocks Sydney zoo with 'miracle' survival Lyon draw 1-1 in the Bernebau to earn a 2-1 aggregate win over Real Madrid. Real crash out of Champions League Wayne Rooney scores twice in another irresistible display as Manchester United ease into the Champions League quarter-finals at AC Milan's expense. Man Utd 4-0 AC Milan (agg 7-2) Beijing's silent invasion of electric bicycles Powered pedal Challenges ahead for new president in quake-hit Chile Tough task 'Open carry' activists do weekly shop with a gun Mardell's America Will review of UN climate change body be unbiased? Earth Watch Why the UK fears politics and force are out of synch Afghan anxieties Church authority at risk as scandals spread in Europe Fighting the tide South Africa's ANC asks Winnie Mandela to clarify a media report in which she apparently fiercely criticised ex-husband Nelson. ANC seeks Winnie Mandela answers South African President Jacob Zuma submits his declaration of interests, after critics urged an inquiry into his finances. Zuma submits finance declaration The US vice-president renews criticism of Israel over an East Jerusalem building project and calls for bold steps for peace. Biden steps up pressure on Israel The US government records a budget deficit of $221bn (£147.6bn) in February - the largest monthly deficit in its history. US reports record budget deficit Indonesia's President Yudhoyono confirms security forces killed Bali bomb suspect Dulmatin in raids in Jakarta on Tuesday. 'Bali bomber' killed in Indonesia China's exports surged 46% in February, figures show, raising hopes of a strong recovery in global trade. China's exports see big increase Russian oligarch Boris Berezovsky wins his libel case over claims he was behind the murder of former agent Alexander Litvinenko. Berezovsky wins poison libel case The EU's foreign policy chief, Lady Ashton, tells MEPs how she will shape Europe's new diplomatic service, as officials vie for influence. Ashton sets out diplomatic vision Egypt's top Muslim cleric has died suddenly in Saudi Arabia at the age of 81. Egypt's top cleric dies aged 81 Iranian President says it is the US, not Tehran, that is playing a "double game" in Afghanistan. Iran attacks US over Afghanistan Militants attack the office of a Western aid agency, killing six people and wounding others, the agency and police say. Pakistan attack kills aid workers The Pakistan Cricket Board issues indefinite bans to former captains Mohammad Yousuf and Younus Khan for "infighting". Pakistan bans for Yousuf and Younus Jim Muir reports on the new Kurdish party that has emerged in northern Iraq to mount a challenge in the third general election since the overthrow of Saddam Hussein's regime in 2003. New Kurdish party to challenge polls Andrew Harding reports from Harare on the uneasy mood among the white population and the MDC party as President Robert Mugabe says he's ready for another term. Bitterness and unease in Zimbabwe Joe Biden is in the region to encourage talks between the Palestinians and Israel. What can be achieved? Can US broker Middle East peace?