ATHENS — Wildfires intensified across southern Europe on Wednesday with a round-the-clock battle to protect the perimeter of Greece’s third-largest city and at least three deaths reported in Spain, Turkey and Albania. Outside the Greek port city of Patras, firefighters struggled to protect homes and agricultural facilities as flames tore through pine forests and olive groves. Tall columns of flames rose behind apartment blocks on the outskirts of the city. …Spanish Prime Minister Pedro Sánchez expressed condolences after the death of a firefighting volunteer in the hard-hit Castile and León region north of the capital, Madrid, where thousands have been displaced by evacuations. In Turkey, a forestry worker was killed Wednesday while responding to a wildfire in a southern region, officials said. The Forestry Ministry said the worker died in an accident involving a fire truck that left four others injured.