Afghanistan
Afghanistan exhibits source-sink dynamics like a landlocked watershed: $643M in dried fruit exports flow through Pakistan's chokepoints to reach global markets.
Afghanistan exemplifies what happens when geography creates both opportunity and constraint. The Hindu Kush mountains, averaging 4,500 meters, divide the country into three distinct regions, fragmenting internal cohesion while positioning it at the crossroads of Central and South Asia. For millennia, this made Afghanistan a critical Silk Road node—the Khyber Pass connected civilizations. Today, it makes the country a landlocked 'source' with no direct access to the sea, dependent on neighbors who control its economic arteries.
The nearest coast lies 480 km away through Pakistan, which handles most transit to international markets. When Pakistan closed border crossings at Torkham and Chaman in 2024, the economic impact was immediate—traders lost millions, and the country scrambled to develop alternative routes. By late 2025, Iran had become Afghanistan's largest import source at 29%, a structural shift that mirrors how organisms develop redundant pathways when primary channels fail.
Despite these constraints, Afghanistan has found niches in global trade. Dried fruit exports reached $643 million in 2024, with pine nuts, raisins, and apricots flowing to India, China, and the UAE. Saffron cultivation spans 3,200 hectares. Coal and minerals add to an export basket worth approximately $2 billion annually. But 94% of exports remain raw materials—the country captures little processing value.
The fundamentals remain challenging: 2024 GDP grew 2.5%, but population growth of 8.6% means per capita income is declining. Agriculture employs 60-80% of the workforce yet produces under a third of GDP. One-third of the population—14.8 million people—remain acutely food insecure. Between September 2023 and July 2025, 4-4.7 million refugees returned, adding pressure to an economy still finding its post-2021 equilibrium.