# Iran-US military and diplomatic tensions > Live situation record from CLSTR: https://clstr.news/situations/20261020-iran-us-military-and-diplomatic-tensions > Updated: 2026-10-20T08:25:01.000Z. Sources: 5. Developments: 2. Tensions between Iran and the United States have escalated following rhetoric regarding national security and potential military action. Initially, Mohammad Mokhber, an advisor to Iran’s Supreme Leader, warned that the Islamic Republic would strike enemies beyond its borders to preserve security, specifically referencing the Strait of Hormuz in response to US remarks. This friction intensified as US President Donald Trump issued threats regarding potential attacks on the Koh-e Kalang underground facilities near the Natanz nuclear site. In response, Iranian Foreign Ministry spokesperson Esmail Baghaei stated that Iran would not leave any strike unanswered and would respond with ‘at least equal intensity’. While Baghaei noted that Tehran remains open to diplomacy to prevent further escalation, he cited US ‘excessive demands’ as a primary obstacle. Additionally, he clarified that recent diplomatic discussions with Russia focused on regional issues and the Persian Gulf rather than nuclear enrichment or new nuclear deal negotiations. ## Timeline ### 2026-10-20: Iran warns of retaliation against potential US strikes on Koh-e Kalang Iran's Foreign Ministry spokesperson warned that any US strike on the Koh-e Kalang nuclear site would face a significant response, asserting that Tehran will not leave attacks unanswered. 2 sources. https://clstr.news/cluster/iran-warns-of-retaliation-against-potential-us-strikes-on-koh-e-kalang ### 2026-10-10: Iran official warns of strikes beyond borders following US remarks Iranian official Mohammad Mokhber warned that Iran will strike enemies beyond its borders to protect national security following recent remarks by US officials. 3 sources. https://clstr.news/cluster/iran-official-warns-of-strikes-beyond-borders-following-us-remarks --- Cite as: Iran-US military and diplomatic tensions. CLSTR, https://clstr.news/situations/20261020-iran-us-military-and-diplomatic-tensions