Following the action...
The world wide Stockmarket Crash occurred on 20th October, 1987.
At the same time an explosion on an oil tanker in Kuwaiti waters on the 16th of October turned out to be due to an Iranian silkworm missile. At the time the US Navy was carrying out operations to protect Kuwaiti owned tankers from
Iranian attacks by providing naval escorts. The US retaliated on the 19th of October, but there was no sign of Iran ceasing such operations as it suspected any shipping in the gulf of complicity with Iraq.