Rubio calls Iran's demands outrageous while the US is running out of options.
The White House is having trouble finding a way out of the Iranian entanglement, and the diplomatic gap is becoming unbridgeable.
According to him in a conversation with reporters, the Iranian demands are simply not only unacceptable, but in some cases scandalous and ridiculous, and really unrealistic.
With the Strait of Hormuz still closed and US bases damaged, the US is running out of leverage to force Iran to accept a deal on American terms.