Complex sentence: In two cases in Taiwan, Pakistani immigrants applied for naturalisation and renounced their Pakistani citizenship, but in the interim the decisions to permit their naturalisation as citizens of Taiwan were reversed, meaning they were left stateless.
Split into simpler sentences: In two cases in Taiwan, Pakistani immigrants applied for naturalisation and renounced their Pakistani citizenship. In the interim, the decisions to permit their naturalisation as citizens of Taiwan were reversed, meaning they were left stateless.