In today’s newsletter: Intentional or not, recent incursions by drones and fighters jets are testament to Moscow’s increasingly cavalier attitude, and pose difficult questions of the allianceGood morning. Of all the scary things about the recent military escalation between Russia and Nato, perhaps the most unnerving is this: it is impossible to know which incident will be the one that sends things spiralling out of control.In the past two weeks, there have been a series of Russian incursions into Nato airspace with unpredictable consequences. First with drones, and then with fighter jets, the Kremlin appears to be testing how far