Iran tanker seizure: What's so important about a ship's flag?

Iran tanker seizure: What's so important about a ship's flag?
25 July 2019

The cargo ship Stena Impero, seized by Iran last week, was sailing under a British flag - but it was owned by a Swedish company and had no British nationals on board.

It's very common for ships to fly the flag of a country that differs from that of the owners.

But why is it done and who benefits?

continue...https://www.bbc.com/news/world-49083108