Iran on Saturday downplayed reports of a large blast near the Natanz nuclear facility in the Isfahan Province, saying it was the result of an unannounced air defense drill during which a missile was fired over the area housing the sensitive uranium enrichment site. The Natanz nuclear facility is a major part of Iran's nuclear program. With over 19,000 centrifuges currently operational, it is considered Iran's main uranium enrichment site and as such, it has been the target of several attempts to hamper its operations, mostly via cyberattacks. The most famous of the latter is the 2010 Stuxnet strike that...