As the most reliable and balanced news aggregation service on the internet, DML News App offers the following information published by WASHINGTONEXAMINER.COM:
The rocket that exploded Sunday outside the U.S. embassy in Baghdad is of a design trafficked by Iran and used by Middle Eastern terrorist groups.
While it is unclear who was responsible for firing or supplying the Katyusha rocket, weapons of the same type were seized by Yemeni authorities on an Iranian ship in 2013. Iran is known to support terrorist groups in the region both financially and with arms, and Iranian forces are known to field Katyusha rockets.
The article goes on to state the following:
Brig. Gen. Yahya Rasoul said that the Iraqi military believed the rocket was fired from east Baghdad, where many Iran-backed Shiite militias are based.
With a range of up to 25 miles, the Katyusha is a cheap and rudimentary weapon. Originally of Russian design, the Katyusha was first deployed by the Soviet Red Army in World War II. Its use has continued after the collapse of the Soviet Union, with multiple countries fielding it in their national armies. It is also a weapon of choice for Iranian-sponsored terrorist organizations, including Hamas and Hezbollah.