The United States and Israel appear to be preparing for a major military confrontation with Iran, with officials and analysts warning that a large-scale operation could begin in the coming days or weeks if diplomatic efforts fail, multiple reports indicate.

According to Axios, senior US and Israeli officials believe the risk of conflict is “imminent”, with planning focused on a broad, sustained campaign rather than a limited or symbolic strike.

Sources cited by the outlet said the proposed operation could last weeks and resemble a full-fledged war.

Axios reported that the scale of military preparations suggests a joint US-Israeli campaign significantly larger than recent operations.

Israeli officials were quoted as saying that combat could begin within days if talks with Tehran collapse.

Massive military build-up

The United States has sharply expanded its military presence in the Middle East as part of contingency planning.

According to Axios, the current US armada in the region now includes two aircraft carriers, 12 warships, hundreds of fighter jets, and multiple air-defence systems.

The report said more than 150 US military cargo flights have transported weapons systems and ammunition to the Middle East in recent weeks. In addition, around 50 fighter jets, including F-35s, F-22s and F-16s, were deployed within 24 hours, highlighting the pace and scale of the build-up.

Reuters has also reported on increased US deployments, including additional naval and air assets, noting that Washington is preparing for potentially sustained operations should political authorisation be granted.

Analysts say the moves are intended to signal resolve while maintaining pressure on Tehran over its nuclear programme and regional activities.

Diplomatic track still open

Despite the military posture, diplomatic efforts have not been abandoned. US and Iranian envoys have continued contacts aimed at easing tensions, though progress has been limited. US officials have publicly stressed that diplomacy remains the preferred option, even as preparations for alternative scenarios intensify.

Markets react to escalation risk

Global markets have responded to the heightened risk of conflict. Oil prices have risen above $64 per barrel, as investors assess the potential impact of a wider Middle East confrontation on energy supplies and key shipping routes.

The situation remains fluid, with no official confirmation of imminent military action.

However, the scale of preparations and warnings from senior officials have underscored the seriousness of the moment, raising concerns of a major escalation if diplomacy fails.