China Courts Influence in Trump’s Iran Diplomacy While Backing Tehran’s Defiance

China is emerging as a shadow power broker in the escalating tensions between the United States and Iran — a development that could seriously complicate President Trump’s diplomatic efforts. According to Gatestone Institute senior fellow Gordon Chang, Beijing has backed Iran “across the board, except for soldiers, sailors and pilots,” providing economic and political support that sustains Tehran’s defiance of US sanctions.

This support extends to China’s recent push to settle oil transactions with Iran in Chinese currency rather than US dollars, a move Chang calls “an attack on the dollar” that threatens the US-led global financial order. The shift risks undermining the dollar’s dominance in energy markets and empowering rivals like Iran, Russia, and Venezuela, who are increasingly circumventing sanctions with China’s help.

Despite this, China is attempting to cast itself as a diplomatic intermediary. Chang notes Beijing played a “small mediating role” in recent ceasefire efforts in the Strait of Hormuz, signaling goodwill ahead of President Trump’s scheduled visit to Beijing in mid-May. This carefully choreographed diplomacy aims to boost China’s global stature while maintaining its strategic partnership with Iran.

The stakes are high. China’s growing involvement complicates US efforts to isolate Iran and pressures Washington’s allies caught between economic ties to Beijing and security commitments to the United States. Trump’s administration has responded with threats of sweeping tariffs on nations supporting Tehran, underscoring the economic dimension of this geopolitical contest.

In essence, China is leveraging the Iran conflict to project power and challenge US influence on multiple fronts — economic, diplomatic, and strategic. As Trump prepares for talks with Iran, this unexpected player’s moves could shape the outcome in ways that undercut American interests and embolden authoritarian regimes. We will be watching closely as this tangled web of alliances unfolds.