A small antimatter explosion would not be mistaken for a nuclear weapon. In fact, a big antimatter explosion might be mistaken for a nuclear weapon, but since a missle would not have been detected, no-one would no who to retaliate against, and so retaliation would be delayed long enough for people to realise that there is no fallout and so it cannot be nuclear.
A small antimatter explosion would not be mistaken for a nuclear weapon. In fact, a big antimatter explosion might be mistaken for a nuclear weapon, but since a missle would not have been detected, no-one would no who to retaliate against, and so retaliation would be delayed long enough for people to realise that there is no fallout and so it cannot be nuclear.