The second round of peace talks between the United States and Iran, scheduled for this week in Pakistan, faces uncertainty following Iran's threats to withdraw after the US seized an Iranian-flagged vessel near the Strait of Hormuz. The two-week ceasefire is set to expire on Wednesday, with US President Donald Trump stating that an extension is unlikely. Iran's parliament speaker, Mohammad Bagher Ghalibaf, emphasized that negotiations cannot occur under threats and hinted at new military strategies if conflict resumes. The US administration, represented by Vice President JD Vance and other key figures, plans to attend the talks, although Trump has warned that failure to reach an agreement could lead to military action. The ongoing tensions in the Hormuz Strait remain a critical issue in the negotiations, with both sides expressing a desire for peace but escalating their rhetoric.