Global equity markets opened higher on Wednesday, driven by a broad improvement in risk sentiment and a pullback in crude oil prices.

The rally was underpinned by growing investor confidence that a diplomatic breakthrough between the United States and Iran is within reach, reducing geopolitical premiums in energy markets.

The positive momentum carried through to Asian trading sessions, with major indices including Japan's Nikkei 225 and South Korea's Kospi posting gains.

European markets are also poised for a firm start, reflecting the easing of supply-side concerns that have weighed on global growth expectations in recent weeks.

This development comes as traders navigate a crowded calendar of macroeconomic data releases and the commencement of the Wall Street earnings season.

The convergence of geopolitical de-escalation and softer inflation data in the US has bolstered expectations that the Federal Reserve may adopt a more dovish stance, providing additional tailwinds for equity valuations.