Two tankers carrying Iranian oil are signalling Pakistan as their destination – an unusual move that may be an indication they are seeking a safe place to wait as the US blockade takes effect. The Rani and the Amil, which are carrying a combined 1 million barrels of crude, switched their destination signals to Karachi on Tuesday, ship-tracking data show. The two vessels were already outside the Persian Gulf when Washington reimposed its naval blockade of Iranian shipping. It is unlikely the...