Speaking to a group of reporters and experts April 25, Issa Kalantari, the adviser for water, agriculture and the environment to Iran’s vice president, warned that if Iran does not change its approach to water use, the result could be mass migration.

According to Shahrvand newspaper, Kalantari, a former minister of agriculture, warned that by continuing to exploit 97% of Iran's surface water, “Approximately 50 million people, 70% of Iranians, will have no choice but to leave the country.” He did not offer a timetable on when this would happen but asked, “With the state of our foreign policy, which countries are ready to accommodate 30 to 50 million Iranians?”

Kalantari said that Iran and Egypt are two countries that due to excessive resource usage are currently “exposed to a serious crisis.” However, he said that Egypt’s water exploitation is only at 46%, a “big difference” from Iran’s 97%.

“To understand the depth of this tragedy, look at the water exploitation of other countries: Japan 19%, America 21%, China 29%, India 33% and countries such as Spain, which has geographical similarities to Iran; it’s only 25%,” he said. He added that according to international standards, surface water exploitation should not be more than 30%, and that most advanced countries have set maximum levels of 25%.