Using your reasoning, you can basically throw out any structured system that doesn't comply with your own untrustworthy feelings of security. You can essentially point at any shadow within the borders of Iran and claim there are hidden actors conspiring towards your undoing.

What aside from their total annihilation or subjugation would ever convince you of your (Israel's) safety?

But using your own reasoning then Iran is a signatory of the Nuclear Non-Proliferation Treaty so they are also throwing out a structured system that doesn't comply with their own feelings.