Asian equity markets opened higher on Tuesday morning, defying the geopolitical shock of US President Donald Trump formally declaring that the United States is at war with Iran.

The declaration, made to the Senate, marked a significant rhetorical escalation in the ongoing conflict, yet risk appetite in Asia remained resilient in the early session.

The MSCI Korea index and other regional benchmarks posted gains, suggesting that traders are interpreting the announcement as political posturing rather than an immediate catalyst for severe supply chain disruption or a broader military engagement that would trigger a flight to safety.

This market reaction contrasts with the heightened tensions surrounding the US-Iran standoff that have gripped global markets in recent weeks.

The resilience of equities comes as President Trump simultaneously asserted that inflation has reached all-time highs, a claim that intensifies the political debate surrounding the military conflict.

The juxtaposition of war rhetoric and domestic economic concerns adds a layer of complexity to the market's assessment of the administration's policy direction.