Iranian subs will collect information. Yes they will... and would that include watching Yemen turn from a failed state to the nightmare of a civil war. Or is Iran worried about US and Saudi naval assets approaching Yemen. With Saleh recuperating from facial burns in a Saudi Arabia. Tehran figures now is the perfect time to encroach into Saudi sphere of influence. Even if most Gulf states will scream bloody murder. The Clerics of Tehran know how to take an opportunity... and turn it to an advantage. Don’t they.
from the article: Iran sends submarines to Red Sea in move that could anger Israel