These provocations are a test for Europe. "We have nothing to respond with."

In an interview with Spiegel, British historian and expert Mark Galeotti advises NATO to be prudent in its consequence to Russian provocations. "Don't provoke us, due to the fact that we are more dangerous than you!" - he believes. Incidents of incursions by Russian drones and fighter jets into the airspace of NATO countries are "deliberate...