Don't want Russia to successfully invade your country? Then do this.

• Russia's attempt to seize Hostomel airport in 2022 was part of a "well-established playbook."
• "Appreciation of this playbook is key for states who might find themselves in the crosshairs," experts wrote.
• Even though Russia may dwarf a small state, that doesn't guarantee a successful airport seizure.

Here's some advice for nations who don't want Russian troops as uninvited guests: Guard your airport.

That's the recommendation from two American defense experts who point to a pattern in Russian operations over the last 50 years: when the Kremlin wants to occupy another nation, it goes for the airport.