http://www.marsecreview.com/2019/06/persian-gulf-oil-shipments-now-cost-more-than-500000-to-insure/

The cost of insuring Middle East oil shipments is soaring as tensions mount in a region responsible for about a third of all seaborne petroleum.
So-called war risk premiums for a standard oil cargo from the Persian Gulf and the tanker hauling it can now cost upwards of $500,000, according to people familiar with the insurance market. Earlier this year, the same premiums would have cost owners less than 1/10 of that. (…)