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Western officials blame Turkey for oil disruption
By James Politi & Tom Wilson
Azerbaijan's SOCAR halts Russian crude supplies to Turkish refinery
By Rowena Edwards & Julia Payne
Turkey seeks proof of insurance from Russian oil tankers
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Millions of Barrels of Oil Halted Near Turkey in Sanctions Mess
By Christopher Condon & Alex Longley
Oil tanker jam forms off Turkey after start of Russian oil cap
By Chris Cook, Ayla Jean Yackley & David Sheppard
Turkey oil tanker logjam snarls Russia oil sanctions
By Daren Butler