BORDERS do more than separate states, they bind neighbours to one another’s decisions, for better or worse.

Nowhere is this more evident than along the long, porous frontier between Pakistan and Afghanistan, where shared history, culture, and geography intersect with persistent insecurity. Rising tensions and repeated cross-border attacks are testing a relationship that has long been central to regional stability.

In recent weeks, that relationship has reached a critical point. Pakistan’s repeated appeals to the Afghan Taliban government to restrain the leadership of the Tehreek-e-Taliban Pakistan (TTP) and dismantle its networks have gone largely unanswered. Faced with ongoing attacks emanating from Afghan soil, Islamabad has undertaken targeted operations against militant hideouts. These measures reflect a simple reality: when insurgent groups exploit a neighbour’s territory with impunity, patience has limits, and security becomes a matter of necessity rather than choice.

Militant networks continue to operate from Afghan soil with near-total freedom, carrying out attacks that kill innocents and strike at Pakistan’s security infrastructure. For any sovereign state, allowing hostile groups to use a neighbour’s land as a launchpad for violence is unacceptable. Pakistan’s response has therefore shifted from diplomatic appeals to assertive counterterrorism operations. Critics may decry these actions as escalatory, but the fundamental duty of any government is clear: protect its citizens and defend its borders.

The stakes are amplified by the broader strategic context. The TTP does not act in isolation. By sheltering these militants, Afghanistan has effectively become a conduit for hostile regional actors, most prominently India seeking to drain Pakistan’s attention and resources. Whether through direct support, tacit encouragement, or the simple failure to act, the use of Afghan territory as a base for attacks deepens mistrust and leaves Islamabad little choice but to respond decisively.

Afghanistan’s internal fragility compounds the problem. Since the Taliban’s return to power, the country has faced economic collapse, international isolation, and weakened governance factors that have limited Kabul’s ability to rein in armed factions. While Afghan leaders speak of dialogue and regional stability, the continued presence of militant groups exposes a stark gap between rhetoric and reality. These armed groups, operating with relative impunity, not only endanger Pakistan but also undermine Afghanistan’s own claim to sovereignty and legitimacy in the eyes of its neighbours and the international community.

Informal, back-channel diplomacy has emerged as a stopgap, with influential religious and tribal figures attempting to bridge gaps that formal talks cannot. Yet dialogue alone cannot replace concrete action. Pakistan’s demand is straightforward that Afghan soil must not be used to launch attacks. Failure to uphold this responsibility is not merely a bilateral issue, it undermines sovereignty and erodes the foundations of peaceful coexistence. The consequences of continued inaction are predictable and unavoidable.

The opportunity for Afghanistan, however, is substantial. A cooperative Kabul could transform the region. Trade corridors linking South Asia and Central Asia could flourish, energy networks could be developed, and economic integration could uplift millions on both sides of the border. A secure, stable Afghanistan would attract investment, tourism, and regional partnerships, creating a foundation for growth that benefits everyone. Pakistan has repeatedly emphasized that regional prosperity depends on Afghanistan taking decisive steps to prevent its territory from being exploited by militant proxies. Peace and stability would create opportunities that have long eluded both countries.

The alternative is stark. Continued tolerance of insurgent activity or acting as a proxy for hostile powers is a strategic miscalculation. Using Afghan territory to target Pakistan not only destabilizes its neighbour but also threatens Afghanistan’s own security, isolates it diplomatically, and invites retaliatory measures that could be devastating. The logic is simple: a state that permits or tolerates proxy violence against its neighbour inevitably invites conflict and its consequences. The message is unambiguous: stand with Pakistan and regional peace, and Afghanistan prospers; exploit Pakistan through proxies, and it will face severe repercussions.

Ultimately, the future of Pakistan-Afghanistan relations hinges on a clear choice by Kabul. Afghanistan can embrace partnership, uphold security commitments, and prevent its territory from being used against Pakistan, paving the way for stability, economic growth, and regional opportunity. Or it can persist in proxy games and militancy, aligning with hostile actors, most notably India, and jeopardizing its own future. The decision is not only about Pakistan but Afghanistan’s own survival, legitimacy, and prosperity.

Pakistan remains committed to peace and regional cooperation. Dialogue channels remain open and opportunities for collaboration abound. But words alone will not secure stability. The time for action is now. Afghanistan can choose a path of responsible statehood, security, and shared prosperity or it can continue down a path of proxy conflict, inviting consequences that will be immediate, severe, and unavoidable. The choice is Afghanistan’s and the stakes could not be higher. Stability, growth, and regional trust are within reach if Kabul acts responsibly. Defiance, proxy warfare and complicity in attacks against Pakistan will not only threaten neighbours but will erode Afghanistan’s own future. The lesson is clear that a cooperative Afghanistan will thrive but one that chooses proxies over peace will pay a steep price.

—The writer is PhD in Political Science, and visiting faculty at QAU Islamabad.

© Pakistan Observer