Assertion: warhead's target | /r/HasProperty | 6.4 km
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Source sentences:
text: Under good conditions, the W-71 warhead had a lethal exo-atmospheric radius as much as 30 miles (48 km), although it was later stated to be 12 miles (19 km) against "soft" targets, and as little as 4 miles (6.4 km) against hardened warheads.