(CNN)Turkish President Recep Tayyip Erdogan says he'll resign if Moscow can prove its claim that Turkey shot down a Russian plane to protect its oil trade with ISIS.
"As soon as such a claim is proved, the nobility of our nation requires [me] to do this," Erdogan told reporters at the climate change summit in Paris on Monday.
But, he added, if the allegations are untrue, then Russian President Vladimir Putin should resign.
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