New US Sanctions are enough to keep Brent between US$ 80-90 bbl and to heft shipping rates for legitimate tanker fleets.
A Trump embargo on Iranian oil shipments could add to pricing pressure.,
Russia accounts for about 13% of global crude production and 12% of global ship borne oil exports, Data is no longer published by Moscow. My estimate is that crude sea borne exports amount to about 5 - 6 mn bpd. The amount of Russian crude seaborn exports carried by sanctioned tankers has risen due to the latest US sanctions on tankers to 42%- 48%. (Sanctioned tankers now transport about 35% of oil exports from Iran, Venezuela and Russia together). So, call Russian crude oil exports carried on these sanctioned tankers 3mn bbl/day. China imports 2.3- 2.5mn bbd of Russian crude (19% of its crude imports and about half of Russia's crude sea born exports and 70% - 80% of the volume carried on sanctioned tankers). India's imports of Russian crude oil are about 2mn bbd or about 40% of total crude imports. At a rough guess India accounts for nearly all the remaining 20-30% of Russian crude oil carried on (now) sanctioned tankers.