Concerns about financing,potential sanctions on Russian energy exports and logistical problems have dampened demand for Russian refined products since the invasion of Ukraine last week.Some banks are reluctant to provide letters of credit to buyers of low-sulphur diesel loading at the Russian Baltic port of Primorsk,a key source of supply for northwest Europe-Primorsk is often the largest single source of the region's diesel arrivals.Typically,importers in northwest Europe buy Russian diesel through trading firms such as Vitol,Gunvor and Trafigura.
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