In the lead-up to the Paris Olympics opening ceremony, a series of arson attacks have severely disrupted France's high-speed rail network, affecting travel for approximately 800,000 passengers. Transport Minister Patrice Vergriete described the incidents as 'coordinated malicious acts' targeting key lines, including those connecting Paris to Lille, Bordeaux, and Strasbourg. Authorities are investigating potential links to Moscow, following the arrest of a Russian spy, Kirill Gryaznov, who allegedly boasted about causing chaos at the Olympics. Eurostar services have been significantly impacted, with numerous cancellations and extended journey times due to the destruction. The French government has implemented heightened security measures, deploying tens of thousands of police and military personnel to ensure safety during the Games. Passengers are advised to postpone their travel plans as repairs are underway, but disruptions are expected to continue into the weekend.