Time............Timeline of significant events in Hizb ut Tehrir
1953................... Founding by Taqiuddin al-Nabhani in Jerusalem.
1956..................... Party yet to decide how it would assume authority.
1960.............. HT begins "Interaction Stage" in Jordan. Society is unresponsive. Party revises its method.
1961...................... HT adopts the method of seeking support from the influential faction(s) to assume power, specifically by gaining sympathy and protection from within the army to conduct a coup or nussrah. The party also sent experienced members to seek support in Syria and Iraq.
1964........... Announcement that society in Jordan has responded positively to its call, forcing it to attempt to take power in that country.
1968/69............. HT allegedly involved in two (failed) coup attempts in Jordan and Syria.
1970............... Several coup attempts having failed, HT Party efforts "come to a standstill" until 1980.
1974........... HT allegedly involved in (failed) coup attempt in Egypt.
1977.............. Founder and leader Taqiuddin al-Nabhani dies in Lebanon. Succeeded by Abdul Qadeem Zallum, also a Palestinian cleric.
1978 ........... ]HT declares that the Muslims had reached a state of total surrender and despair and are not responding to its call. Party acknowledges that this had caused the level of activity to decline almost to standstill, mainly due to misconceptions.
1979............. HT twice offers the post of Caliph to Ayatollah Khomeini, leader of the Iranian Islamic Revolution, but Khomeini ignored HT’s request.
(The party later denounced him as an American agent.)
1980............... Party leadership states that though seeking nussrah is vital, members should remember that the attainment of power also depends on gaining popular support.
1989December............... Start of party moving away from a strict non-violence stance,
December 22, 1989................. conference report discusses the theological foundations of "armed insurrection against any `unfaithful` government".
1996-7.................. Internal dispute known as "the Redress". Dissident members accuse the leadership of Abdul Qadeem Zallum of deviating from party principles. Dissenters are led by Abu Rami, a veteran member from the party inner circle Four different "camps" develop.
1998.................... HT declares that the Caliphate is now the wish of all the Muslims.
2001June................... Moving in a more confident and radical direction (according to Zeyno Baran),HT states in its Al-Waie journal that it is"permissible" to carry out suicide attacks with explosive belts.
2003March................... 79-year-old Leader Abdul Qadeem Zallum retires as leader, succeeded by Ata Khalil Abu-Rashta,a Palestinian civil engineer, who takes HT on a more aggressive line. US-led invasion of Iraq begins. The invasion and subsequent occupation helps HTby raising consciousness among Muslims of a "global umma"and by lowering Muslims' opinion of the United States --the leader of the invasion and (according to HT) the "head of Kufr".
2010–2016............. Party works to ignite the Syrian Revolution and heavily invests in it,hoping that the revolutionary fighters would unite under HT's Islamic umbrella and agree upon an Islamic Caliphate.