Facebook to make stock market debut 'in May'

• Istanbul to host global energy regulation forum

  Sixth World Forum on Energy Regulation, organized by Turkey's energy regulatory authority, begins in Istanbul on May 25, 2015

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  Turkey determined to proceed with Southern Gas Corridor

  Energy Minister Taner Yildiz says Southern Gas Corridor is one of the most significant gas supply projects for European Union

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  Deputy PM: Central bank prepared to act to support lira

  Turkish central bank has authority and responsibility to intervene on exchange rates, Deputy Prime Minister Babacan says

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  Global gold demand down to five-year low in 2014

  World Gold Council says consumer demand dropped and jewelry demand in China fell 33 percent

• Experts: Syriza gives hope to Greek people

  At a panel in Ankara, experts evaluated victory of left-wing Syriza party in Greece

• Bank Asya shareholders apply to court to regain control

  Bank's shareholders want to suspend takeover by country's Savings Deposit Insurance Fund

• Global growth needs kickstart, but where and how?

  Countries all chase growth at different speeds; leaders all run in different directions, the G20 top-level finance summit reveals

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  Lavrov: Russia will consider financial aid to Greece

  Foreign minister says help may be possible despite Russia suffering a 'unilateral illegitimate line' at the hands of 'our Western colleagues.'

• $7bn Asian pipeline project revived in Pakistan talks

  Turkmenistan, Afghanistan, Pakistan and India agree to revive stalled gas pipeline project

• Turkey reveals airspace violation by Russian jet

  Ministry of Foreign Affairs says SU-34 was in Turkey's airspace; Moscow denies claim; Turkish Air Force steps up security

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  PM: Turkey has right to take 'all kinds of measures'

  Ahmet Davutoglu says country exercised its 'international right and national duty' in protecting its borders

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  Russia's Lavrov cancels Turkey visit

  Foreign minister calls off Istanbul trip over downing of Russian warplane

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  Turkey 'repeatedly warned' Russian warplane violating airspace

  Military says aircraft 'of unknown nationality' given 10 warnings in five minutes over airspace breach

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  Turkey: Condolences pour in post Ankara attack

  Condolences from around the world are continuing to pour into Turkey following Saturday’s horrific twin bombings in Ankara that killed at least 97 people.

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  Germany to launch new military strategy 'without taboos'

  Defense Minister says German armed forces will act under new strategy from 2016, marking a formal end to its post-WWII pacifist policy

• Egypt's Morsi not referred to military court: Source

  An Egyptian judicial source has denied reports that ousted President Mohamed Morsi had been referred to a military court

• Australia's ex-prime ministers issue Bali Nine plea

  Six former leaders call for clemency on death sentence for drug smugglers

• At least 5 killed in Lahore blast in northeast Pakistan

  Blast smashed windows of several nearby buildings and at least six vehicles parked outside compound were badly damaged