Here are the results for each (using IMF 2026 figures)
| Country | Own GDP ($bn) | Neighbours combined ($bn) | Own ÷ neighbours | Land neighbours |
|---|---|---|---|---|
| United States | $32,384 | $4,628 | 7.0x | Canada, Mexico |
| China | $20,852 | $8,411 | 2.5x | India, Russia, Vietnam, Pakistan, Kazakhstan, Myanmar, Nepal, Mongolia, Kyrgyzstan, Tajikistan, Afghanistan, Laos, North Korea, Bhutan |
| United Kingdom | $4,265 | $779 | 5.5x | Ireland |
| Brazil | $2,636 | $1,997 | 1.3x | Argentina, Colombia, Peru, Venezuela, Uruguay, Bolivia, Paraguay, Guyana, Suriname |
| South Korea | $1,931 | $17 | 112x | North Korea |
| Turkey | $1,640 | $1,191 | 1.4x | Greece, Iran, Iraq, Bulgaria, Azerbaijan, Georgia, Armenia, Syria |
| Indonesia | $1,540 | $553 | 2.8x | Malaysia, Papua New Guinea, Timor-Leste |
| Israel | $720 | $562 | 1.3x | Egypt, Jordan, Lebanon, Syria, Palestine |
| South Africa | $480 | $128 | 3.7x | Zimbabwe, Mozambique, Botswana, Namibia, Eswatini, Lesotho |
| Nigeria | $377 | $143 | 2.6x | Cameroon, Benin, Chad, Niger |
| Dominican Republic | $136 | $39 | 3.5x | Haiti |
Notes:
- Brazil: France’s GDP is about $3,596bn, so counting it would take the neighbour total to roughly $5,593bn and flip Brazil to red.
- Israel: this is the tightest margin, and Egypt alone is about $430bn of the $562bn.
- Turkey: Iran’s figure varies a lot by source ($300bn IMF 2026 against $448bn UN 2024), but Turkey still clears the total using the higher one.
- Gap-fills: the IMF has no current figure for some neighbours, so I used UN 2024 for North Korea ($17.2bn) and Syria ($17.3bn), the 2024 figure for Palestine ($16.0bn), and IMF 2025 for Lebanon and Afghanistan. None of these changes a result.
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