Scott Pruitt met in his office last year with a veteran Washington lobbyist tied to the bargain-priced condo where the EPA head was living.
Another 112 people were wounded, according to public health officials.
Police are trying to locate the suspect, who is believed to have fled after a customer grabbed his gun.
"There is no way that Iran would do a one-sided implementation of the agreement," Zarif said.
While many evangelical Christians dismiss climate change as major concern, some scripture-citing environmentalists within their churches are on a mission.