Oil prices could tumble back below $20 as 'land mines lurking right below the surface' endanger a crucial OPEC deal, RBC strategist says

· *The price of oil could slide below $20 for the first time since 2002 if an OPEC production cut agreement can't be reached, RBC Capital Markets strategist Helima Croft said Thursday.*
· *A Thursday meeting between the world's biggest producers has "several land mines lurking right below the surface" that could tank...