Czech President Petr Pavel warned NATO may need to shoot down Russian aircraft or drones deliberately violating allied airspace to avoid weakness.
https://www.foxnews.com/politics/us-allies-shoot-down-russian-aircraft-testing-nato-boundaries-czech-president-warns
https://www.foxnews.com/politics/us-allies-shoot-down-russian-aircraft-testing-nato-boundaries-czech-president-warns