Oct 1, 2024 – Iran launches roughly 200 missiles toward Israeli cities, most of which are intercepted by U.S. destroyers in the eastern Mediterranean and Israeli air‑defenses, marking the first direct state‑on‑state missile exchange in decades [3].

June 2024 – The United States conducts “Operation Midnight Hammer,” striking three Iranian nuclear facilities during a 12‑day war with Israel, a campaign Trump later cites as proof of Tehran’s threat [7].

June 21‑22, 2025 – U.S. B‑2 bombers hit Fordow, Natanz and Isfahan nuclear sites in a coordinated strike, which the Trump administration touts as a “major victory” and sets the stage for future pressure on Tehran [6][3].

June 23, 2025 – In retaliation for the June nuclear strikes, Iran fires missiles at Qatar’s Al Udeid Air Base; most are intercepted after advance warning, underscoring Tehran’s pattern of delayed, limited retaliation [2][9].

Dec 28, 2025 – Jan 2026 – Nationwide protests erupt over a soaring rial, leading to a violent crackdown that kills thousands (officially >3,000, foreign monitors estimate tens of thousands) and triggers an internet blackout, the worst repression since 1979 [8].

Jan 13, 2026 – President Donald Trump hints at “very strong options” against Iran, signaling a possible military response as U.S. officials weigh their next steps [10].

Jan 13‑15, 2026 – Iran’s parliamentary speaker Mohammad Bagher Qalibaf declares U.S. bases “legitimate targets” if attacked, while President Masoud Pezeshkian vows a “harsh and discouraging” response to any aggression [10].

Jan 15, 2026 – Analysts warn that Tehran faces an existential threat and may abandon its usual restraint, potentially launching a more aggressive retaliation if Washington moves toward regime‑change [9].

Jan 15, 2026 – Reports reveal Iran’s IRGC is developing chemical and biological warheads for ballistic missiles, prompting Trump to warn the U.S. could back further Israeli strikes if Tehran rebuilds its long‑range missile capability [11].

Jan 29, 2026 – The United States expands air and naval assets in the Middle East and Trump threatens regime change, while Iran’s IRGC warns its “finger is on the trigger” and vows retaliation [1][4].

Jan 30, 2026 – The USS Abraham Lincoln carrier strike group enters the U.S. Central Command area near Iran, heightening the risk of a broader confrontation [2].

Jan 30, 2026 – U.S. warships and fighter jets gather off Iran’s coast after Trump’s public threat, an “armada” that raises regional alertness [8].

Jan 30, 2026 – Iran endures its most severe protest crackdown since 1979, with thousands dead, mass detentions and a two‑week internet blackout; officials label the unrest “terrorist‑driven” [2].

Jan 30, 2026 – The IRGC rehearses a naval battle in the Sea of Oman, preparing for possible U.S. retaliation [8].

Jan 30, 2026 – Iraqi, Lebanese and Yemeni proxy militias pledge direct retaliation for any U.S. strike on Iran, urging “all‑out war” in support of the Islamic Republic [5].

Jan 30, 2026 – Secretary of State Marco Rubio warns that 30‑40 k U.S. personnel across eight or nine regional bases sit within range of Iranian one‑way drones and short‑range ballistic missiles [5].

Jan 30, 2026 – Energy strategist Umud Shokri cautions that Iran’s threat to close the Strait of Hormuz could spike oil prices and trigger a global recession [5].

Jan 30, 2026 – Iranian leaders declare any U.S. attack an act of war, heightening Gulf‑state anxieties about spillover [2].

Jan 30, 2026 – U.S. military buildup in the region reaches its largest scale since the 2003 Iraq invasion, reflecting a “massive build‑up” that could support strikes on missile sites [7].

Jan 30, 2026 – U.S. planners state the United States is “poised for limited precision strikes” within days, targeting IRGC and Basij bases, ballistic‑missile launch sites and nuclear facilities [1].

Feb 18, 2026 – Trump posts on social media that the U.S. could use Diego Garcia and RAF Fairford bases against Iran, prompting Iran’s UN envoy to label the remarks “explicit public threats” [14].

Feb 19, 2026 – Iran sends a UN letter warning that any regional U.S. bases, facilities or assets will be treated as “legitimate targets,” invoking Article 51 of the UN Charter for a “decisive and proportional” response [14].

Feb 20, 2026 – Supreme Leader Ayatollah Ali Khamenei warns that an attack on Iran would spark a broader regional war, underscoring the high stakes of any U.S. action [14].

Feb 21, 2026 – Iran’s “retaliation playbook” notes that U.S. forces are within range of Iranian UAVs, proxies stand ready, and a Hormuz closure could trigger a worldwide recession [4].

Feb 23, 2026 – The Pentagon positions assets across the Middle East for multi‑wave strikes, planning a multi‑day campaign that would begin with missile infrastructure, then IRGC/Basij nodes, and finally nuclear facilities, tying escalation to Iranian retaliation [3].

Feb 25, 2026 – In his State of the Union, Trump declares the U.S. will not allow Iran to obtain a nuclear weapon, cites past attacks and sets a 10‑15‑day deadline for Tehran to present a new nuclear proposal, with a third Geneva round slated for the following Thursday [7].

Feb 27‑Mar 2026 (planned) – The United States may launch limited precision strikes within days on IRGC, missile and nuclear sites, while a second carrier is en route to the region, expanding the naval presence [14][1].

Feb 2026 (planned) – Iran conducts a joint live‑fire naval drill with Russia in the southern Persian Gulf, demonstrating maritime coordination that could support future disruption of shipping lanes [14].