TAIPEI, June 22 (Reuters) – Taiwan is “of course” a country and China lacks both the historical evidence and legal proof to back up its sovereignty claims, President Lai Ching-te said on Sunday in a strong rebuke to Beijing and its stepped up political and military pressure.

China says democratically-governed Taiwan is “sacred” Chinese territory that has belonged to the country since ancient times, and that the island is one of its provinces with no right to be called a state.