Poland’s pipeline operator PERN said on Sunday it had halted a section of the Druzhba pipeline carrying oil from Russia to Europe after detecting a small leak that is being fixed, with oil flows set to be restored by Tuesday. The damaged section, where there is no indication of the leak being caused by a third party, is under repairs now, the company said in a statement carried by Reuters. “The expected time for pumping to resume is Tuesday morning,” PERN said. Security of supply to Germany is “fully guaranteed,” a…