Corridors, Coasts, and Contestation: Sino–Bangladesh Relations in the Bay of Bengal and the BCIM Space

Executive Summary

The February 2026 election has handed Tarique Rahman’s Bangladesh Nationalist Party (BNP) a clear governing mandate while installing Jamaat-e-Islami as a formidable parliamentary opposition. The BNP has inherited an international order that is less liberal and more transactional: market access is increasingly conditioned on geopolitical alignment, interdependence has been weaponized, and the rules-based order has given way to bilateral leverage and supply-chain geopolitics. Building on transactional multipolarity, this issue brief argues that Sino–Bangladesh momentum is likely to deepen—not by strategic preference, but because energy transition, supply-chain geopolitics, and the reordering of the Bangladesh-China–India–Myanmar (BCIM) space leave Dhaka fewer alternatives. The issue brief examines six corridor–coast cases—Gwadar, Kyaukphyu, Chabahar, Kaladan, Hambantota and Colombo—through Dhaka’s lens, assesses Bangladesh’s coastal anchors at Matarbari and the Pekua submarine base, and examines limits to Chinese influence in the Bay of Bengal. Prime Minister Rahman’s June 2026 visit to Beijing—fifteen memoranda, a third joint communiqué, a framework for Mongla Port, and a proposed China–Myanmar–Bangladesh Economic Corridor—suggests that this deepening is already operational. The principal vulnerability is the absence of a national consensus on foreign policy, measured against the “Bangladesh First” doctrine and the Dhaka–Beijing–Washington triangle.

The Strategic Context

The brief’s title—“Corridors, Coasts, and Contestation”—names the three structural axes through which Bangladesh’s strategic environment is now legible to the BNP government: the corridors of infrastructure financing and connectivity that bind Dhaka to Beijing’s Belt and Road network and define its eastern frontier; the coasts where the Bay of Bengal-to-Malacca maritime stretch is being reconfigured by competing powers; and the contestation between rules-based logic, the U.S.–Bangladesh Reciprocal Trade Agreement, and the transactional logic that defines the post-2025 international order. Read together, these axes describe not separate stories but a single bind, in which the choices available to Dhaka are increasingly set by where ports, pipelines, and political alignments meet.

Bangladesh enters mid-2026 in a position that is paradoxically clearer and more constrained than at any point since the 1990s. The Awami League’s political collapse in July 2024, the Yunus interim government’s tariff preferences with Washington, the BNP’s two-thirds parliamentary mandate in the credible February 2026 national election, the parallel emergence of Jamaat-e-Islami as a formidable parliamentary opposition, and Tarique Rahman’s swearing-in on February 17 have produced a whole-of-politics realignment rather than a partisan one. The structural backdrop, however, has hardened. The Trump administration’s National Security Strategy 2025 institutionalizes “flexible realism” and binds market access to geopolitical alignment. What the international political-economy literature now describes as weaponized interdependence—the deliberate use of asymmetric positions in cross-border financial, trade, and technology networks for coercive ends—has become the operating logic of the post-2025 trading system, and supply-chain geopolitics has displaced trade liberalization as its organizing frame. In South Asia, the Iran war and the Islamabad-mediated ceasefire of April 2026 have elevated Pakistan to a category of strategic relevance not seen since 1971. The World Bank, effective fiscal year 2026, has quietly removed Pakistan from its South Asia grouping—a bureaucratic change with strategic consequences. Europe, too, is recalibrating eastward.

For Bangladesh, the upshot is that “balancing”—a posture to which the country’s political and foreign-affairs communities have long been habituated—is no longer a posture; it is a continuous revaluing of options. The argument of this brief is straightforward. In this environment, China is the most consequential fit for most of the material questions Dhaka now faces—energy, supply chains, infrastructure financing, and the eastern frontier—even as it remains a complex fit for regional architecture. The United States is the other consequential partner, more so since the Bangladesh–U.S. Reciprocal Trade Agreement was signed under the interim government headed by Dr Muhammad Yunus on February 9, 2026.