Crude oil prices were on course for their first weekly increase after three consecutive weekly losses, following President Trump’s latest threat to Iran that gave the country 10-15 days to make a deal or “really bad things” would happen. At the time of writing, Brent crude was trading at $72.08 per barrel, with West Texas Intermediate at $66.89 per barrel, both up after hitting their highest levels in six months on Thursday after Trump’s threat. “With a deal looking increasingly difficult to reach, it also means it…