It's obviously a nuke

>>509946600
that's just some retard making the same baseless speculation as the niggers ITT. Russia and China tested nukes too and they looked the same.
I'll humor you, maybe the hydrogen bomb slow-exploding orange videos could be fake and only the gigantic brown mushroom cloud ones are real, but there are tons of other older videos like this >>509925096 and from multiple countries

Here's a video from one of the USSR's tests