Since April 9, developments between the United States and Iran have broadly followed a pattern of “ceasefire implementation and advancing negotiations, but fragile execution and unresolved disagreements.” After the two-week temporary ceasefire entered the implementation stage, the Strait of Hormuz nominally resumed limited shipping, yet the actual volume of vessel traffic remained extremely low, suggesting that maritime tensions had not genuinely eased. Then, on April 10 and 11, the United States and Iran held high-level talks in Islamabad, discussing sanctions arrangements, ceasefire boundaries, and navigation through the strait. Despite the lengthy discussions, however, no substantive breakthrough was achieved. From April 13 to 15, there were brief expectations that the ceasefire might b