The attack on the embassy of Azerbaijan in Iran is the result of the anti-Azerbaijani hysteria of officials, diplomats, generals, clerics, deputies and experts of this country. Statements from Iran against Azerbaijan, "changing the borders is our red line", "Zangezur Corridor should not exist", "Azerbaijan should not establish relations with Israel" have misled the fanatical circles in the neighboring country. Of course, it is not an exception that the Armenian diaspora in Iran is behind the attack on our embassy. The goal is to further strain Azerbaijan-Iran relations. Therefore, in order to maintain our composure, Tehran should be required to investigate the powers and agents behind the killer or killers, and this process should be kept under control. It was Iran that crossed the red lines.