By Andreas Rinke and Natalia Zinets KYIV (Reuters) -Ukrainian President Volodymyr Zelenskiy said on Monday his country would continue to seek membership of the NATO transatlantic military alliance despite pressure to cede that aspiration to avoid war with Russia. Ukraine’s envoy to Britain had suggested Kyiv may reconsider its NATO bid but later backtracked while acknowledging concessions could be on offer amid Western warnings of a potentially imminent Russian invasion. The Kremlin, which has more than 100,000 soldiers massed on Ukraine’s border, denies planning to invade the former Soviet st…