[Bigg Red]

I watched the video only, and I did not see Netanyahu say Iran is next.

[Farcesensitive]

I checked and you are right that he didn’t say it directly.
But everyone knows who the real enemy behind the attacks are and that is probably who he is threatening in that speech:

Iran ‘helped Hamas terrorists plot surprise attack’ on Israel
https://www.thesun.co.uk/news/24332023/iran-hamas-terrorists-attack-israel/