President Trump announced a two‑week suspension of bombing against Iran after receiving international appeals to extend a deadline he had set. Former national security adviser H.R. McMaster, a retired U.S. Army lieutenant general, told CBS News he welcomed the pause but urged caution: “We’ll see what happens,” he said, noting the important unanswered questions about terms, verification and who speaks for Iran.
McMaster said the pause may create an opening but stressed that U.S. objectives remain focused on preventing Iran from projecting power beyond its borders. He argued that achieving that aim would require a fundamental change in the nature of the Iranian regime—one that rejects the revolutionary ideology driving Tehran’s long proxy war against the United States, Israel and many Arab states.
Regime dynamics and fracture
McMaster described the Iranian leadership as fragmented after recent strikes and internal political disarray. He suggested the Islamic Revolutionary Guard Corps (IRGC) may be the dominant force now and warned that hardline elements would resist concessions. “If it’s this guy Ghalibaf, it doesn’t bode well,” he said, referencing the speaker of the Iranian parliament. He also said the designated or acting Supreme Leader, Mojtaba, may be injured and in hiding.
He noted the regime has already lost influence in some proxies and partners — Hezbollah, Hamas and elements of the Assad regime in Syria — and that coalition strikes have weakened Iran’s military and support networks. McMaster said who emerges in Tehran matters greatly: some leaders might seek accommodation, while the IRGC and Basij, responsible for severe repression at home, would likely oppose compromise.
What to look for from Iran
Asked what the U.S. should expect to see from Iran to deem a pause credible, McMaster said concrete, structural changes would be necessary: a rejection of the export of the revolution, an end to permanent hostility toward the United States, Israel and Arab neighbors, and a halt to Iranian efforts to create a “ring of fire” around Israel through proxies and rocket arsenals. He added that symbolic or short‑term statements would be insufficient without durable, demonstrable changes in behavior and capabilities.
On how talks are happening, McMaster warned that visible negotiators may not represent the whole regime. “Those who may be talking…are afraid of more extreme people in their own security forces,” he said, underscoring fragmentation as both a potential problem and an opportunity for change.
Threats, language and ethics
Referring to President Trump’s stern warnings and threats on social media and to specific targets such as bridges and power plants, McMaster called attention to the damage caused by bombastic and inconsistent rhetoric. He said that threatening to “end a civilization” would be unethical and counterproductive, and could alienate Iranians or drive them toward the regime instead of away from it.
On military targeting, he noted legal and practical distinctions: strikes on bridges, power plants or petrochemical infrastructure can raise legal and ethical issues depending on dual‑use considerations and the purpose of the target. McMaster stressed adherence to just‑war criteria and warned that crude, escalatory language undermines clarity about objectives and the ethical nature of the campaign.
Humanitarian and political consequences
McMaster framed the conflict as one that raises broader humanitarian and political questions. He called the campaign against Iran’s external influence “just” because of decades of Iranian proxy warfare, but cautioned that threats suggesting total destruction would be unethical. He urged U.S. leaders to “side with the Iranian people” and avoid rhetoric that could make the population decide the regime is the better protector against total ruin.
Recent violence and Iranian instability
McMaster referenced recent mass casualty events inside Iran, citing large numbers killed in a short period in January, and said those actions intensified domestic opposition while also hardening security forces that committed the repression. He suggested the regime might not be able to survive in its current form long term, but emphasized that transitions often come through violence and fragmentation, complicating any diplomatic path.
Bottom line
McMaster described the ceasefire as a moment to watch closely. He said the terms must lead to an “enduring” outcome that reduces Iran’s regional projection of force, and that meaningful verification and regime behavior change—not just statements—will determine whether the pause leads to a lasting de‑escalation. Until then, he cautioned, “we’ll see what happens.”