"We all would love to see an agreement with Iran in which the Straits are open and they abandon their nuclear ambitions and so forth... We also have to have a plan B."

"We have to start thinking about what do we do if, a few weeks from now, Iran decides 'We don't care, we're going to keep the Straits closed. We're going to sink any ship that doesn't listen to us or doesn't pay us.' Then someone's going to have to do something about it."