[piva00]

It's hybrid warfare, disrupting the economy by shutting down airports, increasing fear in the population to pressure us to not escalate it further "or else..."; I don't believe it's an attempt to break NATO, they want to keep the harassment and disruptions at as low cost as possible, and these drones flying over important hubs (airports, ports, bases) are quite cheap while causing relatively larger annoyances.

They can't sustain, economically speaking, a war against EU/NATO but Putin can definitely play on our fears much harder than we can play on Russians fears.