Extracted from today's NYT:

For the second time this year, Iran appears to have fired a missile at the wrong target with deadly consequences, fueling public disillusionment with the government and undermining faith in its military.

On Sunday, a missile from an Iranian Navy frigate struck another Iranian naval vessel during a military exercise in the Sea of Oman, killing at least 19 sailors, the navy said.

In January, Iran’s Revolutionary Guard Corps shot down a Ukrainian Airlines passenger plane with two missiles, killing the 176 passengers and crew onboard. Iran blamed the shooting on human error.

Official details of the accident were scant on Monday. It was not immediately clear whether it was the result of human error or faulty equipment.

There were reports that the ship had sunk, and people familiar with the accident said a rescue mission was underway to find at least 20 other crew members who were still missing.

The navy said Monday that 15 people were wounded and that the ship had been brought to shore.

“The scope of the incident is under investigation by experts,” Iran’s Navy said in a statement.
This generates a question in my mind, if they keep shooting at domestic airplanes and their own naval vessels by accident, how long until they shot at us by accident? Somebody might do well to take their toys away.