France’s high-speed rail network has been severely affected after it was targeted by several arson attacks hours before the opening ceremony for the Olympic Games in Paris, rail operator SNCF said on Friday. “SNCF was the victim of several simultaneous acts of malicious damage affecting the Atlantic, Northern and Eastern high-speed lines,” the firm said. The route to the Stade de France, one of the venues for the Olympic Games, is also currently closed. Repairs are under way, SNCF said. However, it added that the restrictions could last the whole weekend. The Olympics in Paris officially begin…