India, June 29 -- Developments surrounding US-Iran negotiations, movement in crude oil prices and key global economic data are expected to steer gold and silver prices next week, analysts said. The focus will squarely be on talks scheduled in Burgenstock, Switzerland, where US Vice President JD Vance is expected to lead discussions with Iranian officials to build on last week's framework agreement aimed at ending hostilities and reviving nuclear negotiations. Analysts said the outcome of the talks could influence risk sentiment and energy markets, with implications for bullions. Domestic commodity markets will remain closed during the morning session on Friday on account of Muharram. "Gold and silver momentum looks sideways/corrective as ...