It should not even be doubted; he's been very clear, especially regarding the "deal" that Democrats now claim was effective.
I quote:
“Here’s my message to Iran’s leaders: the United States will never allow you to acquire a nuclear weapon, not just during the term of this agreement. Never.”
“You can’t trust Iran, and nothing in this deal is based on trust.”
“There is absolutely no reason to trust Iran. It’s a ruthless, brutal regime.”
“Iran must never be allowed to attain a nuclear weapon.”
“A nuclear-armed Iran is unacceptable.”
“The Iranian regime’s word cannot be trusted, and a nuclear Iran cannot be tolerated.”
You cannot say the Iranians weren't aware of these statements, and if you were, that's on you.
I quote:
“Here’s my message to Iran’s leaders: the United States will never allow you to acquire a nuclear weapon, not just during the term of this agreement. Never.”
“You can’t trust Iran, and nothing in this deal is based on trust.”
“There is absolutely no reason to trust Iran. It’s a ruthless, brutal regime.”
“Iran must never be allowed to attain a nuclear weapon.”
“A nuclear-armed Iran is unacceptable.”
“The Iranian regime’s word cannot be trusted, and a nuclear Iran cannot be tolerated.”
You cannot say the Iranians weren't aware of these statements, and if you were, that's on you.