US forces board a sanctioned oil tanker in the Indian Ocean, the Pentagon says

[EX500rider]

6. Google says:

A cargo ship would not legitimately be flagged in Botswana, as it is a landlocked country with no maritime ship registry. Ships flying the Botswana flag are using fraudulent, fake registration (ghost ships) as part of a "dark fleet" to evade international sanctions, hide illegal cargo, and avoid inspection