Summary
Ukrainian President Volodymyr Zelenskyy warned Europe that it cannot withstand Russia without Ukraine’s military, calling Ukraine’s victory vital to stopping Kremlin expansion.
Speaking to Polish media, Zelenskyy stressed that Russia’s larger, more brutal army would target other European nations if Ukraine falls.
He criticized Western allies for underestimating Russian President Vladimir Putin’s ambitions, urging them to strengthen Ukraine’s defenses.
Not really. Europe’s army is “small” because we have not been drafted.
Populations:
Defending countries will draft most of their people, while the attackers draft far less. Countries that are not at war will simply not draft and will have a natural army size. (Which protects the country until people get drafted and trained)
There’s no reason to compare apples and pears here.