German Foreign Minister Johann Wadephul announced on Wednesday that Berlin will introduce new measures to combat drones suspected of surveilling critical infrastructure, in response to rising tensions with Russia. These are violations of sovereignty that are unacceptable,” Wadephul told a press conference in Berlin. We must now adapt our defensive measures very quickly so that we can react more quickly,” he said, News.Az reports citing foreign media. German public broadcaster NDR reported Wednesday that investigators detected multiple unidentified drones in the northern state of Schleswig-Holstein last week. "We also need to rapidly develop the technical capabilities to ensure this can be implemented effectively," he added.