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David Spencer, a former police officer who now is head of crime and justice at the think tank Policy Exchange, says too often the law had previously "favoured those involved in disruptive protests at the expense of the legitimate interests of other people."

"Tanzania will not continue to allow unequal market access to persist at the expense of its people," he said.

If this happens, it would mark a new chapter in Ukraine-Africa relations, though not necessarily at the expense of Russia.

Following reports that the White House will use bilateral trade negotiations to isolate China, Beijing has warned countries against "reaching a deal at the expense of China's interests".

The site has been rapidly manufacturing memes and sarcastic captions to capitalize — unrestrained by any tariffs — on a hot international export, namely jokes at the expense of the United States and its tariff-loving president.