US President Donald Trump posted on Truth Social on April 19, 2026, warning Iran of strikes on power plants and bridges if ongoing talks fail, as US negotiators including JD Vance prepare to arrive in Islamabad on Monday evening for a second round. The first round of talks last weekend ended without agreement under a two-week ceasefire, following Iran's firing in the Strait of Hormuz on Saturday. A US naval presence persists amid Iran's partial blockade of the strait since late February.