£5.3bn reward for investors in BP buy-back

1997 – BP pays £375m for a 10 per cent stake in SIDANKO, then Russia’s fifth-largest oil company

2003 – BP establishes Russian joint venture TNK-BP

2008 – TNK-BP chief executive Robert Dudley leaves Russia, blaming a campaign of harassment in a fight for control

2011 – BP and Rosneft agree a £10.5bn share swap

2011 – Deal with Rosneft collapses after BP’s Russian partners win an injunction

2012 – AAR agrees to sell its stake to Rosneft for £18bn

2013 – Rosneft closes the acquisition of TNK-BP, making it the world’s largest listed crude producer

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