AI 中文总结
该研究针对2025年23%的外援削减，发现18%债务减免与10%汇款调动可弥补半数受援国损失，但部分国家因侨民网络或债务市场问题被排除，为替代资金补外援提供了新视角。
AI 中文摘要
2025年，双边外援削减了23%，影响了130多个受援国。我们评估债务减免或汇款增加是否能弥补260亿美元的外援损失。采用针对双边捐助方各自削减情况校准的网络冲击模型，我们估算受援国的外援损失，并从需取消的年度债务偿付额、可调动的汇款能力（即汇款流量与理论最大值之间的空间，理论最大值指所有处于工作年龄的移民均汇款的情况）方面评估补偿可行性。我们发现，18%的外部债务偿付减免与10%的汇款调动可弥补半数受影响国家的损失。但部分国家仍被排除在一种或两种机制之外。全球金融架构中出现了针对外援削减最大受损国的根本性权衡：有望从债务偿付减免中受益的国家缺乏庞大的海外侨民网络（限制了其增加汇款的能力），而拥有成熟侨民渠道的国家则面临传统债务市场的结构性排斥，导致债务偿付减免失效。这些见解为替代资金来源如何取代外援提供了更细致的视角。
英文摘要
In 2025, bilateral foreign aid was reduced by 23%, affecting more than 130 aid recipient countries. We assess whether debt service relief or remittance increases can match the USD 26 billion in aid losses. Using a network-shock model calibrated to bilateral donors' individual cuts, we estimate recipient-country aid losses and evaluate compensation feasibility in terms of annual debt service payments that would need to be cancelled and remittance capacity (the headroom between flows and a theoretical maximum in which every working-age migrant sends funds) mobilised to financially offset them. We find that 18% external debt service relief and 10% of remittance mobilisation could compensate half of the affected countries. However, some countries remain locked out of either or both mechanisms. A fundamental trade-off in the global financial architecture emerged for large aid-cut losers: countries positioned to benefit from debt service relief lack large international diaspora networks (limiting their capacity to increase remittances), while those with established diaspora channels face structural exclusion of traditional debt markets, rendering debt service relief ineffective. These insights introduce nuance in how alternative finance sources can replace foreign aid.
Comments11 pages, 5 figure, supplementary material
