A US delegation led by Vice President JD Vance arrived in Pakistan on Saturday for high-level talks with Iranian representatives, the first such meeting since the war began more than a month ago that will test whether they can shore up a fragile cease-fire and pave the way for peace. The cease-fire brokered by Pakistan still faces hurdles in the talks beginning Saturday, as Israel and Hezbollah militants have traded fire along the border of southern Lebanon and Iran has set conditions before negotiations can begin.