[benologist]

Israel's shot a bunch of projectiles out of the air after detecting and calculating their trajectory in flight.

What makes smaller projectiles much harder?

[Mizza]

Occlusion. I watch a lot of ATGM videos, and most of the shots are when tanks are parked next to buildings, driving through an urban environment, or perched on a hill, rather than in open terrain. There is very little time to react no close range sensors.