Europe markets open on a cautious note over threatened oil flows (EUR:USD:)

London (UKX) -0.39%,

Germany (DAX:IND) +0.11%.

France (CAC:IND) +0.23%.

In other parts of Europe, Producer prices in Poland rose by 1.7% Y/Y in June.

The pan-European Stoxx 600 (STOXX) edged 0.06% lower to €641.3, as renewed Middle