Iran so far has followed the letter of the agreement, but the spirit of the agreement involves Iran also sending signals to the world community and businesses that it is not going to be engaging in a range of provocative actions that might scare business off. When they launch ballistic missiles with slogans calling for the destruction of Israel, that makes businesses nervous.

As quoted in "U.S. to clarify Iran rules, but Tehran must reassure wary firms" (April 2016)