Regional tensions over the South China Sea have tanked the sales of a popular children’s doll in Vietnam after it was put under investigation and accused of being unpatriotic because a design marking appeared to resemble China’s “nine-dash line”. The Baby Three doll is Chinese-made and had reportedly been hugely popular among children and Gen Z in Vietnam earlier this year. Between September, when it first gained popularity, and December the dolls reportedly generated US$1.6m in sales. However a suggestion that a heart-shaped design on one version of the doll looked like the controversial line that China’s government inserts on...