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In 2012, David Cameron met the Dalai Lama. In retaliation for the meeting, China froze bilateral relations for 18 months. Subsequently, Cameron pledged to have no more meetings with the Dalai Lama and reiterated British recognition of Chinese sovereignty over Tibet. For some, China used economic punishment to extract the UK's concession. For others, China used only diplomatic punishment. This article argues that both sides have underestimated the complexity of the case and need to integrate their insights for a better explanation. While China did not impose or threaten economic sanctions on the UK, its diplomatic sanctions put both political and economic pressure on the UK to concede. This article contributes to the studies of China–UK relations and China's 'economic coercion'.

We propose a score statistic to test the vector of odds ratio parameters under the logistic regression model based on case–control data. The proposed score test is based on the semiparametric profile loglikelihood function under a two‐sample semiparametric model, which is equivalent to the assumed logistic regression model. The proposed score statistic has an asymptotic chi‐squared distribution under the null hypothesis and an asymptotic noncentral chi‐squared distribution under local alternatives to the null hypothesis. Moreover, we show that the proposed score test is asymptotically equivalent to the Wald test under the logistic regression model based on case–control data. In addition, we demonstrate that the proposed score statistic and its asymptotic distribution may be obtained by fitting the prospective logistic regression model to case–control data. We present some results on simulation and on the analysis of two real datasets.