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Four parties revealed on Tuesday they will work together toÌýoppose moves made by , who has been accused by many of conducting a .

The parties involved are the , the , the Republican Party, and Afek Tounes (Horizons of Tunisia).

They urged the head of state, who is an ex-constitutional lawyer,Ìýto adhere to the constitution after a power grab,ÌýreportedÌý°®Âþµº's Arabic sister service, Al-Araby Al-Jadeed.

The new allianceÌýcomes after SaiedÌýsaid last Wednesday thatÌýhe would Ìý- save preamble and two opening chapters - and .

Saied issued Decree 117 which has the effect of "implicitly abrogating [repealing] the constitutional order", according to a collective message from groups including Human Rights Watch and Amnesty International's Tunisia division on Monday, who added that this "is a first step towards authoritarianism".

The Tunisian partiesÌýunited on opposing Saied's power grabÌýtold a press conference they will do whatever is required to restoreÌýthe constitution and that the time for just criticism of the presidentÌýis over.

Democratic Current Secretary General Ghazi Chaouachi said the four parties had varied backgrounds in government and as opposition factions.

The parties said they will welcome any group joining them.

Republican Party Secretary General Issam Chebbi claimed that although reforms wereÌýwidely called for before 25 July - when the president effectively took complete control of the country -ÌýSaied twisted in his power grab.

He argued Decree 117 breaches the constitution andÌýthe president must take it back and restore the Tunisian constitution.

Speaking with Al-Araby Al-Jadeed, he indicated that "all peaceful means are available and public opinion will be mobilised to hold onto the gains of the revolution".

Democratic Forum for Labour and Liberties leader Khalil Zaouia, explained that the four factions involved see a third option, outside of both Saied's stance and the widely criticised governing situation before 25 July.

The constitutional crisis in Tunisia comes a decade after the country of its former dictator, , and inspired the Arab Spring revolutions.