From the BBC World Service: As U.S. and Chinese officials hold trade talks in Spain’s capital, the deadline approaches for TikTok, which U.S. President Donald Trump threatened to ban over security worries. Then, the U.S. and U.K. have lined up a string of deals aimed at speeding up nuclear power projects. And, Ghana is the world’s largest importer of used clothing, but about 40% is too damaged to resell. How can the problem be addressed?