While Kerry cuddles with Zarif, Iran goes to work in the Strait of Hormuz

US Secretary of State John Kerry and chief 'negotiator' Wendy Sherman became the first US officials to set foot on Iranian soil since 1979 on Monday, when they popped into the Iranian Ambassador to the UN's New York office for a meeting with Iranian Foreign Minister Javad Zarif.

Iran's response? Lots of 'goodwill.' And the seizure of a Marshall Islands-flagged ship in the Strait of Hormuz.