Saudi Arabia will attend, Oil Minister Ali al-Naimi told reporters on the sidelines of a conference in Berlin on Thursday.

Saudis plan to attend Qatar oil meeting

Saudi Arabia will join a meeting of producers from within and outside OPEC in Doha next month, bolstering the campaign to freeze output.

West Texas Intermediate oil has surged since slumping to a 12-year low last month on speculation a global surplus will ease.

US oil tops $US40 mark

Oil surged above $US40 a barrel in New York for the first time since December as central banks signalled they will continue to provide economic stimulus.

Aussie tumbles on commodity prices

The Australian dollar fell below US75ยข as commodity prices reversed and as global investors repositioned for higher US interest rates.

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