Because they've been told by the US they're not allowed to use their US supplied arms to do so. They've been asking for permission for at least a year. Refer also constraints placed on Ukraine

[–] woelkchen@lemmy.world 6 points 2 weeks ago (1 children)

Polish deputy prime minister says otherwise:

By asking Poland to shoot down Russian missiles over Ukraine, President Volodymyr Zelensky is attempting to get Warsaw involved in the war, Polish Deputy Prime Minister Krzysztof Gawkowski said in an interview with Radio ZET on Nov. 4. https://kyivindependent.com/zelensky-wants-to-drag-poland-into-war-with-russia-polish-deputy-pm-claims/

It's a choice by the Polish.

[–] thanksforallthefish@literature.cafe 4 points 2 weeks ago

Hmm thanks for that, I read some very different messaging over the last year. I'll try to dig it out

[–] el_bhm@lemm.ee 2 points 2 weeks ago

There is also the issue of

Batteries protecting major cities.
Munitions being limited.
What can be shot down depends on the altitude. See point 1.