Mahou Kunoichi Lyrical Nanoha

[ECSNorway]

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but their identity and origin cannot be identified

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Awkward.
Suggest: "their identity and origin cannot be determined".
Given that they're talking to Japanese reporters, and the initial incidents occurred in Japan, the description of negotiations as taking place with "Japan and her allies" makes sense, even if certain unnamed parties in cities like Washington, New York, and Moscow may be a bit miffed.
(I can just imagine poor Senator Kinsey's heart attack.)--
"I give you the beautiful... the talented... the tirelessly atomic-powered...
R!
DOROTHY!
WAYNERIGHT!
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Sucrose Octanitrate.
Proof positive that with sufficient motivation, you can make anything explode.