HONG KONG — World shares mostly retreated and oil prices jumped on Monday after U.S. President Donald Trump warned Tehran that the “clock is ticking” as U.S.-Iran negotiations over a permanent end to the war stall.U.S. futures fell and markets in Japan and South Korea pulled back from their records. In early European trading, Britain’s FTSE 100 edged up 0.1% to 10,205.31. France’s CAC 40 lost 0.9% to 7,883.42, and Germany’s DAX dropped 0.1% to 23,925.82.During Asian trading, Tokyo’s Nikkei 225 fell 1% to 60,815.95, a decline led by technology-related stocks. It reached all-time intraday high levels last week above...