Nor for that matter are long-range economic forecasts from investment banks.

ECONOMIST: China and India

China, a modern-day economic powerhouse in a world of financial uncertainty, sees Cuba with its need for investment and political support as an important ally in its long-range plans to strengthen and expand its ties with the rest of Latin America, he adds.

BBC: China signs trade deals with Cuba

The yields on these long-dated bonds is already relatively low, in the 4% to max 6% range for investment grade debt.

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