Full coverage: Xi Visits Czech Republic, Attends Nuclear Security Summit

The fourth nuclear security summit has concluded in Washington DC. We can speak now with our reporter Su Yuting for more on the event.

Q1. Chinese President Xi Jinping took part in all the activities on the NSS schedule. And he also delivered a speech at the opening meeting. Can you brief us on his most salient points?

Q2. A communique was issued after the summit, saying the threat of nuclear and radiological terrorism remains one of the greatest challenges to international security. Can you expand further on this and what else was documented?