An oil tanker sailing under the flag of Hong Kong has passed through the Strait of Hormuz and entered the Gulf of Oman in what appears to be a test of the US blockade targeting vessels entering or leaving Iranian ports, according to a maritime data firm. The tanker, AVA 6, departed from a port in the United Arab Emirates on Wednesday, Beijing time. It passed through the Strait of Hormuz sometime between 4am and 2pm on Thursday, according to data from Mingkun Technology, a Chinese maritime...