Even if one insists on non-nuclear city killers, it&#x27;s probably easier to get some Tungsten rods into orbit<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Kinetic_bombardment" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Kinetic_bombardment</a>