The earlier incident and this recent incident may be Iran feeling that a pre-eminant attack is near and hostages are a way to prevent such a thing (at least in their minds). The sub near the Saudi port is disturbing. An attack on Iran may certainly disrupt oil supply for a short time. The recent run-up in oil prices and the USA doubling it's petroleaum reserve seem to be indicators we are going in and soon.
Discussing this all right now on FOX- oil prices..pre-emption etc..