German military bases near Cologne have been placed on high alert following suspected sabotage incidents involving potential tampering of drinking water supplies. A breach in the fence at the Cologne-Wahn airbase raised concerns about contamination, prompting authorities to seal off the base and advise personnel against drinking tap water. Politicians have pointed fingers at Russia, with some suggesting that the incidents are linked to increased espionage and sabotage activities attributed to Moscow. The Cologne base, critical for military operations and housing government aircraft, remained under heightened security while investigations were carried out. Meanwhile, a NATO base in Geilenkirchen also faced an attempted trespassing incident, though it was not sealed off and operations continued normally. The situation has heightened fears of Russian interference amid ongoing tensions in Europe.