SovUnion did it quite a few times, esp in 1961-2. This describes R-14 test with 1.9 Mt wh from Chita to NZ on 9/8/62 http://vpk-news.ru/articles/39023 https://twitter.com/wellerstein/status/911207196469399552 …
Replying to @russianforces
Thanks, Pavel — that was my suspicion. Still a relatively small number of times given size of rocket fleet!
7:07 AM - 22 Sep 2017
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