The Big Question: What comes next as US-Iran talks fail?

After 21 hours of high stakes talks in Pakistan, the US and Iran have walked away without a deal. So, what happens next?JD Vance left Islamabad after marathon negotiations that were meant to end the conflict.Instead, a deadlock and no breakthrough.This was the first direct contact between Washington and Tehran in more than a decade.The highest-level talks since the Iranian revolution. With global stakes.A fragile ceasefire is now at risk.The Strait of Hormuz, a critical artery for around 20 percent of the world's oil, is still effectively shut.And both sides are digging in.