The French navy’s seizure last week of the 22-year-old tanker Grinch, laden with Russian crude as it transited the Mediterranean, reflects intensifying efforts by European countries to squeeze Russia’s oil revenues. Targeting the "shadow" fleet is central to that push, with Europe's leadership emboldened by the US administration’s aggressive actions against Venezuela’s oil exports. The EU is mulling a total ban on maritime services for vessels carrying Russian hydrocarbons in its next sanctions package, which could come out next month and would effectively replace the largely ineffective — and increasingly split — G7 oil price cap. Europe’s tougher stance brings with it potentially big risks.