John Kerry at the 1st Presidential debate in Oct 2004 clearly stated the Iran deal as his vision for how US-Iran relations should work.
This isn’t just “Obama’s legacy” It the only thing Kerry has accomplished in his poltical career
"Reliability" in the North Korea deal is obviously demonstrated by Trump submitting whatever deal arises to the Senate for treaty ratification, which is something Obama never did.
Let's wait for that to happen before people jump to conclusions about USA reliability.
-PJ