(ANSA) - BELGRADE, APR 26 - "Such acts are dangerous and unacceptable. They will not discourage us from providing support to Ukraine. We are carefully coordinating our response to any hostile act against NATO allies," said NATO Secretary General Jens Stoltenberg during a brief press conference in Berlin with German Chancellor Olaf Scholz. Stoltenberg was specifically referring to Russian espionage activities discovered in Germany and the United Kingdom. (ANSA).