Nuclear launch details

  1. Yes
  2. No
  3. No (at least not till 2 seconds before the nuke lands)
  4. 300 (+200 vs. structures) damage in a large radius (though in the single player tosh does 700 + 500 vs structures

A nuke does 500 to buildings, 300 to units in the center. It decays as you go outward, as shown in this image from the Liquidpedia entry on Nukes.

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