Britain is among the least religious countries in the world. But it is experiencing a boom in the number of new Catholic nuns.
The issue has for decades caused tensions between the Holy See and Beijing.
Foreign Minister Javad Zarif immediately blamed the attack on regional countries and their "U.S. masters."
Officials say an engineer was found alive near the engine of the capsized vessel two days after the deadly disaster.
"I never filed a police report and it took me 30 years to tell my parents," the actress Alyssa Milano tweeted.