Wow what kind of an idiot makes a peace agreement with a Sharia law country?
They are not bound to honor it and in this case they haven't. Sharia law says you are not bound to comply.
Look at all the potential Palestinian agreements that cant be completed for similar reasons.
And what was he doing in another country when Iran agreed to the ban on official from travelling outside of Iran by U.N in 2007?. Oh that's right breaking the agreement previously signed.