Why in news
With the US-Iran MoU's 60-day negotiation deadline expired and no compromise reached on reopening the Strait of Hormuz, competing signals from Iran's president and its hardline security chief reveal an internal split over how to respond to renewed US economic pressure, with Pakistan's Army Chief visiting Tehran for mediation on August 24, 2026.
Why for UPSC
Chronology questions test whether a candidate has internalised the actual sequence of a fast-moving current-affairs situation rather than just its individual facts - especially important for a multi-stage story like the 2026 Iran standoff.
Prelims summary
Timeline: US-Israeli strikes on Iran (Feb 28, 2026) → Mojtaba Khamenei becomes Supreme Leader (March 2026) → US-Iran MoU signed, 60-day window opens (mid-June 2026) → window expires without resolution → Pakistan's Army Chief visits Tehran for mediation (August 24, 2026).