Reuters | Oil at highest since mid-2015 on Saudi purge, tighter markets Reuters LONDON (Reuters) - Oil prices hit their highest since July 2015 on Monday as Saudi Arabia's crown prince cemented his power over the weekend with an anti-corruption crackdown, while markets continued to tighten. US Shale Oil Trumps Risk of Supply Shock After Saudi Purge Saudi Crackdown Doesn't Guarantee Aramco IPO – Or Higher Oil Is $60 Oil Too Tempting For OPEC? |