Pakistan and China’s ‘Iron Brotherhood’ makes peace a challenge

“In March 1963, Pakistan did something rare. It handed over land five times the size of Hong Kong to another country, China. Under a boundary agreement with Beijing, Pakistan transferred control of the Shaksgam Valley, roughly 5,180 square kilometers in the Karakoram range, territory India considers part of Kashmir. There was a strategic logic to that deal. Pakistan did not possess uncontested sovereignty over the area, and the dispute remains unresolved today. But China had defeated India in their 1962 border war just three months earlier. Pakistan’s leadership concluded that Chinese control over the contested mountains made more sense than trying to fend off Indian claims alone.” writes Abid Hussien, describing Pakistan and China as “Iron Brothers” in Al Jazeera.

That was the cold beginning of what both countries now call an “iron brotherhood.” It was not born from romance, culture or ideology. It was born from geography, insecurity and a shared adversary-India and it is the two wars India has fought from its painful partition-its effective two state solution that the British implemented in 1947. China needed a partner on India’s western flank. Pakistan needed a great-power patron against India. Seventy-five years after the establishment of diplomatic relations between Beijing and Islamabad, that bargain has only deepened. Its a warp from which Pakistan can neither exit nor win.

Pakistan today presents itself as a broker in the conflict involving the United States, Israel and Iran. Islamabad wants to appear useful to Washington, credible to Tehran, acceptable to the Gulf and responsible before the wider Muslim world. But any Pakistani mediation must be read through the history that began in the Karakoram. Pakistan’s loyalty does not lie in neutrality. It lies with China, because Pakistan’s strategic survival increasingly depends on China.

On the seventy-fifth anniversary of diplomatic relations between China and Pakistan, Islamabad has once again wrapped an old strategic bargain in the language of sentiment. The phrases are familiar: “all-weather friendship,” “iron brotherhood,” “higher than the Himalayas,” “deeper than the ocean.” They are meant to sound emotional, almost poetic. But behind the theatre lies a colder truth. Pakistan’s loyalty lies with China because its strategic survival increasingly depends on China.

That matters today because Pakistan is presenting itself as a broker in the conflict between the United States, Israel and Iran. Islamabad wants to appear useful to Washington, credible to Tehran, acceptable to the Gulf and responsible before the wider Muslim world. But any Pakistani mediation will ultimately reflect the interests of Beijing more than the illusions of neutrality.

The anniversary itself tells the story. Pakistan and China established diplomatic relations on 21 May 1951. Seventy-five years later, Pakistan’s own official messaging describes the relationship as an “All-Weather Strategic Cooperative Partnership” built on mutual trust, sovereign equality and shared strategic significance. Prime Minister Shehbaz Sharif used the occasion to reaffirm Pakistan’s support for the One-China principle and for China’s “core interests,” while also praising the China-Pakistan Economic Corridor as a flagship project of the Belt and Road Initiative.

That is not the language of a normal bilateral relationship. It is the language of alignment.

Pakistan’s relationship with China was once unlikely. Pakistan was tied to the American-led security architecture during the Cold War, while China was a revolutionary communist power emerging from isolation. Yet both countries discovered the same strategic need. China needed a partner on India’s western flank. Pakistan needed a great-power patron against India. The relationship was not born from cultural affinity or ideological brotherhood. It was born from geography, insecurity and calculation.

Over time, that calculation became structural. China became Pakistan’s diplomatic shield, its infrastructure financier, its military supplier and its strategic counterweight to India. CPEC gave Beijing a corridor toward the Arabian Sea and gave Islamabad the promise of roads, energy, ports and industrial development. Pakistan’s official CPEC secretariat still frames the corridor as the economic expression of the friendship, with Gwadar, energy and connectivity at its core.

The military side is even more revealing. According to SIPRI’s 2026 data, Pakistan’s arms imports rose by 66 percent between 2021 and 2025, and China supplied 80 percent of those imports. That is not diversification. It is dependency. A country whose military hardware, air defense, aircraft, naval systems and strategic confidence increasingly come from one supplier cannot pretend that its geopolitical judgment is entirely independent of that supplier.

This is why Pakistan’s mediation in the Iran conflict must be read carefully. Reuters reported that Pakistan shared a revised Iranian proposal with the United States to end the conflict, while Iran confirmed that its views had been conveyed to Washington through Pakistan. A Pakistani source warned that the parties did not have much time and that positions kept shifting.

On paper, Pakistan is well placed. It borders Iran. It has relations with Tehran. It maintains channels with Washington. It has deep links with the Gulf. It is a nuclear-armed Muslim-majority country with a powerful military establishment that likes to present itself as indispensable. It allows Tehran to use its railways to supply oil to China and use its ports in Gwadar to break Trump’s blocade. But mediation is never only about access. It is about whose interests the mediator carries into the room.

Here, the answer is Beijing.

In March, Pakistan’s foreign minister Ishaq Dar travelled to Beijing and met Chinese foreign minister Wang Yi as Pakistan pushed for a peacemaking role. The result was a joint five-part China-Pakistan proposal for the Middle East, calling for a ceasefire, diplomacy and protection of waterways, including the Strait of Hormuz. The Guardian reported that China had kept a careful distance from the war, condemned the initial US and Israeli strikes, called for de-escalation and negotiated directly with Tehran for the safe passage of Chinese oil tankers through Hormuz.

That is the key. China’s overriding interest is not Iranian victory, Pakistani prestige or anti-American drama. China wants stability on terms that protect its energy flows, limit US escalation, preserve its ties with Tehran and avoid a regional war that damages Chinese trade. Pakistan’s mediation gives China a useful instrument. Islamabad can speak where Beijing prefers not to stand too visibly. Pakistan can carry messages, test proposals, reassure Iran, engage Washington and signal to the Gulf, while China remains the larger power in the background.

This is not to say Pakistan is merely a puppet. Islamabad has its own reasons to fear escalation. A wider war could destabilize Balochistan, inflame sectarian tensions, disrupt fuel supplies and put Pakistan in an impossible position between Iran, Saudi Arabia, the United States and China. The Guardian noted Pakistan’s 900-kilometer border with Iran, its large Shia population, its economic exposure to Gulf energy and its need to preserve ties with Saudi Arabia and Washington.

But those national interests do not contradict China’s. They reinforce them. Pakistan wants de-escalation because chaos hurts Pakistan. China wants de-escalation because chaos threatens Chinese oil, shipping and regional investments. The difference is that China has the strategic weight to define the acceptable shape of that de-escalation. Pakistan has the channel. China has the compass.

The timing is telling. As Pakistan marked seventy-five years of relations with China, Beijing announced that Shehbaz Sharif would visit China from 23 to 26 May. Reuters also reported the visit, noting that it follows recent high-level Pakistani engagement with Beijing amid diplomatic efforts over the Middle East.

That visit should not be treated as anniversary diplomacy alone. It is part of the same strategic choreography. Pakistan is mediating in a conflict that directly affects Chinese energy security and regional influence, while its prime minister heads to Beijing to reaffirm a partnership that Islamabad itself describes as central to its future. The message is not subtle. Pakistan wants to be seen as a mediator, but it will not mediate against China’s interests.

For Washington and Jerusalem, this matters. Pakistan may be useful as a backchannel, but it is not neutral in the deeper strategic sense. It will not support an outcome that strengthens American coercive power in the region at China’s expense. It will not endorse a settlement that humiliates Iran so badly that Beijing’s regional position suffers. It will not encourage a war that closes Hormuz, damages Gulf economies and forces China into a crisis it did not choose. Pakistan’s role will be to push a settlement that reduces pressure, preserves channels and allows China to remain the quiet beneficiary of de-escalation.

For Tehran, too, there is a lesson. Pakistan may be a neighbor and a Muslim interlocutor, but its most important patron is China. If Iran believes Islamabad is carrying only Pakistani messages, it is misreading the map. Pakistan’s mediation will likely protect Iran from total isolation, but not from compromise. Beijing does not need Iran to win. It needs Iran not to collapse, not to block energy flows and not to provoke a conflict that forces China into choices it would rather avoid.

This is the reality behind the “iron brotherhood.” Pakistan’s loyalty to China is not romantic. It is practical, military, economic and strategic. China gives Pakistan leverage against India, capital for infrastructure, weapons for deterrence and diplomatic weight in moments when Islamabad wants to be taken seriously. The United States can still use Pakistani channels. The Gulf can still buy Pakistani cooperation. Iran can still speak through Islamabad. But the deeper alignment is elsewhere.

Seventy-five years after an unlikely partnership began, China and Pakistan have turned necessity into doctrine. Islamabad may sit at the table as mediator. It may carry proposals between Tehran and Washington. It may present itself as the responsible Muslim power trying to stop a wider war. But the shadow behind the chair will be Chinese.

And in this conflict, that is the point. Pakistan is not brokering peace from nowhere. It is brokering peace from within China’s strategic orbit.