Relationships between religious groups are generally amicable, although there is some concern among mainstream Muslim leaders[who?] that minority religious groups undermine national unity. There is a concern for religious institutions becoming active in the political sphere. The Islamic Renaissance Party (IRP), a major combatant in the 1992–1997 Civil War and then-proponent of the creation of an Islamic state in Tajikistan, constitutes no more than 30% of the government by statute. Membership in Hizb ut-Tahrir, a militant Islamic party which today aims for an overthrow of secular governments and the unification of Tajiks under one Islamic state, is illegal and members are subject to arrest and imprisonment. Numbers of large mosques appropriate for Friday prayers are limited and some[who?] feel this is discriminatory.