TUNIS, Tunisia — The assassination of a second opposition politician in six months has piled the pressure on Tunisia's troubled Islamist-led coalition government, which came to power in the wake of the Arab Spring but is struggling to right the economy and rein in extremists.
With the country brought to a virtual standstill by a general strike and the revelation that the same gun was apparently used by an al-Qaida-linked Islamist extremist cell in the two assassinations, calls grew Friday for the 18-month-old transitional government to stand down.
On Friday six opposition parties holding 42 seats announced their withdrawal from the 217-seat national assembly and called for the government, elected in the aftermath of the overthrow of the country's long-time dictator, to be replaced by a national unity government tasked with finishing off the constitution and paving the way for fresh elections.
"We are withdrawing from the constituent assembly, which has lost its credibility, and are calling for the dissolution of a government that has failed, and tomorrow we will engage in an open sit-in in front of the assembly until it is dissolved," the parties announced in a statement issued during a late-night press conference.
Tunisia is considered the birthplace of the Arab Spring. Its revolution inspired pro-democracy uprisings across the Middle East and set an example for political cooperation when a coalition was formed between the Islamist Ennahda Party and two secular parties.
However, a troubled economy, rising Islamist extremists and the two political slayings have tarnished the government and fueled opposition calls for its dissolution.
"The assassination of Mohammed Brahmi is a failure of the government and a failure of its security policy," said political analyst Alaya Allani. "I think most of the political elite feel it is urgent after the assassination to dissolve the current government and replace it with a non-partisan, competent one."
The government's failure was driven home, said Allani, when the Interior Minister revealed in a press conference that not only was the same radical Islamist group behind the two assassinations, but that the same gun was used.