Iran has approached the UN's International Maritime Organization, IMO, to warn about what the country describes as "unsafe" commercial routes in the Red Sea, writes the Wall Street Journal, based on a letter sent by Iran on Oct. 30, according to the media.

The letter also states that three Iranian tanker vessels have been attacked off the coast of Saudi Arabia in the past half year. This is two attacks more than the number previously announced by Iran, writes the Wall Street Journal.