Since then, however, it was excluded in favor of the People's Republic of China, and since 1972, it was also excluded from all UN-subcommittees. Since the death of Chiang Kai-shek in 1975, Republic of China no longer aggressively asserts its exclusive mandate and most of the world's nations have since broken their official diplomatic ties with Republic of China (except for 21 nations including Holy See as of 2008). Nevertheless, most nations, as well as the People's Republic government, continue to maintain unofficial relations.