Pakistan imposed a heavy-vehicle ban in Islamabad and shortened metro and bus operations as part of a security upgrade, according to CCTV, in preparation for possible new U.S.-Iran talks in the capital. The measures were described as an effort to strengthen confidence and protect Islamabad as a safe venue, but Pakistan has not announced a timetable for any next round. The development adds logistical preparation on the Pakistani side without resolving the core uncertainty, as Iran has continued to say no follow-up talks with the United States have been agreed.