TAIPEI, May 17 (Reuters) - Former British prime minister Liz Truss will say in Taiwan on Wednesday that the West must avoid appeasing China and show unwavering support for the self-governed island, in a speech that risks further damaging Britain's relations with Beijing. Truss is the most well-known British politician to visit Taiwan since former prime minister Margaret Thatcher in the 1990s, and her trip comes at a time when relations between Britain and China are the worst in decades. China claims Taiwan as its own and has not renounced the use of force to ensure eventual unification. Beijing has previously condemned visits by British lawmakers to Taiwan for what it calls interference in China's internal affairs. "There are still too many in the West who are trying to cling on to the idea that we can cooperate with China on issues like climate change," Truss will say.

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