Increasing tensions between the United States and North Korea have re-ignited traditional worries in Beijing about what could follow a military strike on the isolated dictatorship's ballistic missile and nuclear weapon infrastructure.
Long-time Chinese military planning and recent actions taken by local authorities in areas close to China's border with North Korea show that Beijing has concerns over the immediate and longer-term after-effects of a US attack. One of the areas potentially most affected is the port of Dalian, which, after the border city of Dandong, is the most important major population centre closest to North Korea.
On 14 April Dalian authorities issued an environmental alert calling for all city departments and environmental agencies to be on the alert in case of an emergency.
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