RIYADH - Saudi Arabia on Sunday executed three Iranians convicted of drug trafficking, the interior ministry said, bringing to 145 the number of death sentences carried out in the kingdom this year. The three convicts had attempted to “smuggle a large amount of hashish by sea” into Saudi Arabia , the ministry said in a statement published on the official SPA news agency. They were executed in the eastern port city of Dammam, it said. Saudi executions are usually carried out by beheading with a sword.