Iran goes dark: The terrifying sign that catastrophic developments loom over US talks?

A major disruption has hit Iran's banking sector, with electronic services at four of the country's largest banks reportedly going offline. Customers of Melli Bank, Tejarat Bank, Saderat Bank and Export Development Bank have faced problems accessing mobile banking, online banking, ATMs, card payments and other key financial services. While reports suggest a possible cyberattack may be behind the outage, Iranian authorities have not yet confirmed the cause. The incident comes at a sensitive time, raising questions about the security of Iran's critical infrastructure and the possibility of an escalating cyber confrontation in the region. Is this a technical failure, a cyber operation, or a warning shot in a broader geopolitical contest? Here's what we know so far.