Day 10 of the Iran war has opened with a dramatic shift in US firepower, as Pentagon officials confirm that strike capacity in the theatre has been boosted by nearly 25% in just four days — with more next‑generation bombers now on the way.

According to defence planners, additional B‑52s and B‑2 stealth bombers have joined the fight, while advance elements of the new B‑21 Raider programme are being moved into forward support bases for “operational trials under wartime conditions.” Extra tanker squadrons and munitions ships have surged into the region, flooding depots with long‑range cruise missiles, bunker‑busters and stand‑off glide weapons.

Commanders say the expanded arsenal is already reshaping the air war over Iran: deeper strike packages are hitting multiple missile fields, drone hubs and IRGC command centres in a single wave, while stealth bombers ranging from the Indian Ocean can now loiter longer over high‑value targets near Tehran and Isfahan. One senior officer describes the new posture as “24/7, anywhere in Iran, at a moment’s notice.”

Tehran dismisses the build‑up as “psychological warfare,” insisting its own missile and drone production is “surging, not shrinking.” But inside Gulf palaces and European capitals, the question is turning darker: does a 25% jump in US killing power make de‑escalation more likely — or signal that Washington is preparing for a much longer, far more destructive air campaign than anyone was willing to admit on Day 1?