On Monday I posted on Russia's plans to further restrict oil exports:

Adam posted on Monday in US time on the disruption to trade, including oil shipments, due to Middle East escalation:

In addition to BP's announcement, shipping giants MSC, Hapag-Lloyd, CMA CGM and Maersk all announced a suspension of travel through the Red Sea

Put it all together and oil traded higher on the day:

oil bp russia middle east 19 December 2023