Regional Mediators Convene as Iran Rejects U.S. Peace Plan Terms

Pakistan hosted a high-level summit on March 29 with representatives from Egypt, Saudi Arabia, and Turkey to address the escalating maritime security crisis in the Strait of Hormuz. While the group offered to facilitate direct talks between the Trump administration and Tehran, Iran’s foreign ministry has already characterized the latest 15-point U.S. peace plan as containing "irrational demands." The diplomatic friction is compounded by threats from Iranian Parliamentary Speaker Mohammad Bagher Ghalibaf, who warned that U.S. ground operations would result in troops being set "on fire." The conflict is increasingly drawing in regional proxies and straining global security alliances. Houthi rebels fired their first war missile at Israel on March 28, marking a significant expansion of their involvement shortly after additional U.S. Marines arrived in the region. To bolster defenses, the U.S. has redeployed THAAD missile systems from South Korea to the Middle East, a move analysts suggest signals a strategic prioritization of the current conflict over Indo-Pacific commitments. Concurrently, experts are warning of long-term proliferation risks. Under the leadership of Mojtaba Khamenei, hardliners in Tehran are reportedly pushing for a withdrawal from the Nuclear Non-Proliferation Treaty (NPT). Observers at Chatham House noted that the recent U.S. and Israeli strikes on Iran—following previous engagements in 2025 and early 2026—may convince regional neighbors that U.S. security guarantees are insufficient, potentially triggering a new Middle East nuclear arms race.