Estimates that 80-90% of Russian oil will continue to flow outside the cap mechanism are not unreasonable, a U.S. Treasury official told Reuters. "Oil traders dealing in Russian oil are no longer in Switzerland, Geneva or London. P&I services heeding EU law insure 95% of the world's shipborne oil trade, meaning the EU move could have halted most of Russia's exports. Insurance and shipping industry figures still saw themselves at risk of sanctions which could upend the trade even in the G7 price cap workaround. The EU ratified the price cap this month but details on implementing it remain forthcoming.

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