Inside U.S.-Iran talks in Switzerland

U.S. and Iranian negotiators held marathon talks in Switzerland into Sunday night as they worked to launch a 60-day effort toward a new nuclear agreement.Why it matters: The nearly nonstop talks at the Lake Lucerne Summit signal both sides remain engaged despite significant differences and may be laying the groundwork for broader discussions on regional security.The talks that Vice President JD Vance is spearheading for the U.S., along with officials including White House envoys Steve Witkoff an...