WARSAW (Reuters) – Repairs to a pipeline carrying Russian oil to Germany have begun and Poland does not think the incident was sabotage, the top Polish energy security official told Reuters on Thursday. The discovery of a leak in the main route carrying oil to Germany, which operator PERN said it found on Tuesday evening, came with Europe on high alert over its energy security in the aftermath of Moscow’s invasion of Ukraine. “Everything points to natural causes, material fatigue, of course the fractured section will be examined. So at this moment we have no information that could point to sab…