India, April 12 -- High-stakes negotiations between the United States and Iran in Islamabad are unfolding against a backdrop of rising military tensions and fresh intelligence concerns, even as diplomatic efforts seek to prevent further escalation.

According to a report by CNN, US intelligence assessments indicate that China may be preparing to supply new air defence systems to Iran within weeks. The report, citing sources familiar with the matter, said Beijing could route shipments through third countries to conceal their origin.

The talks are being held at the luxury Serena Hotel, which has emerged as the focal point of diplomatic efforts to end the conflict. The Pakistani capital has been placed under unprecedented security, with aut...