Ten years after Brexit, most seasonal workers in Britain are from countries such as Kyrgyzstan and Tajikistan. Without them, agricultural chiefs say, many farms would fail.

The 66-year-old gave few details of his diagnosis but said the disease was “aggressive.”

Despite the fragile cease-fire in the Middle East, many Africans say they are bracing for tougher times ahead and making difficult decisions about the future.

Their troubles could cascade across Asia because they export a majority of their products.