The Chinese Ministry of Foreign Affairs spokesperson, Guo Jiakun, expressed "concern" on Tuesday over U.S. President Donald Trump's announcement to withdraw the country from the Paris Agreement and the WHO.

Trump signed an executive order that begins the process of withdrawing from the Paris Climate Agreement, which he also did during his first term.

U.S. withdrawal from the world's primary climate pact will have a bigger impact - in the U.S. and globally - than the country's first retreat in 2017, analysts and diplomats told Reuters. One of President Donald Trump's first acts on returning to office on Monday was to quit the Paris Agreement as part of his plans to halt U.