U.S. President Donald Trump is questioning why Iran has not “capitulated” under mounting American military pressure, according to Special Envoy Steve Witkoff. In a Fox News interview, Witkoff said Trump is “curious” why Tehran has not agreed to curb its nuclear program despite a major U.S. military buildup in the Middle East, including expanded naval deployments and preparations for a potential multi-week air campaign. Washington is demanding that Iran halt uranium enrichment at levels reportedly reaching 60 percent, limit its missile program, and end support for regional armed groups. Tehran insists its nuclear program is peaceful and has rejected linking enrichment talks to missile capabilities, while negotiations over sanctions relief remain stalled. With tensions rising and both sides issuing warnings, the standoff could reshape regional security dynamics.