Iraq's new parliament broke up in chaos on Tuesday, with lawmakers walking out and making threats despite calls for the urgent formation of a government to combat a Sunni militant onslaught. Iraqi MPs vote in parliament in Baghdad. (AFP/Ali al-Saadi) After a break called to calm soaring tempers, so many Sunni and Kurdish deputies stayed away that the quorum was lost, so a speaker could not be elected, and the session ended in disarray. Prime Minister Nuri al-Maliki's bid for a third term has been battered by the jihadist-led offensive that has seized large chunks of five provinces, adding fuel to dissatisfaction over persistent allegations of sectarianism and monopolising power. The crisis has alarmed world leaders, displaced hundreds of thousands of people and polarised Iraq's Shiite, Sunni and Kurdish populations. That disunity quickly manifested itself in what was the opening session of a parliament elected in April. Kurdish lawmaker Najiba Najib interrupted efforts to select a new speaker, calling on the government to "end the blockade" and send withheld budget funds to Iraq's autonomous Kurdish region. Kadhim al-Sayadi, an MP in Shiite premier Maliki's bloc, responded by threatening to "crush the heads" of the country's autonomous Kurds, whose regional leader Massud Barzani told the BBC they would hold a referendum on independence within months. Some Sunni MPs walked out at the mention of the Islamic State (IS), the jihadist group leading the anti-government offensive, and enough Sunnis and Kurds did not return following the break that the session was without a quorum. Presiding MP Mahdi Hafez said the legislature would reconvene on July 8 if leaders were able to agree on senior posts. However, the riotous atmosphere did not stop new MPs from queuing to register for their substantial pay and benefits, including weapons and guards, perks that anger ordinary Iraqis struggling with a flagging economy. Under a de facto agreement, the prime minister is chosen from among Shiite Arabs, the speaker from Sunni Arabs and the president being a Kurd. The three are typically chosen in tandem. Washington quickly warned that "time is not on Iraq's side," with State Department spokeswoman Marie Harf calling for "extreme urgency." UN envoy Nickolay Mladenov said "politicians in Iraq need to realise that it is no longer business as usual." It looks increasingly as if Maliki is on the way out, despite his bloc having won by far the most seats in April. He faces criticism from all three of Iraq's major religious and ethnic communities over allegations of sectarianism, sidelining partners and a marked deterioration in security that culminated in the June 9 launch of the militant offensive. "This has become a much more competitive race for the premiership," said Ayham Kamel of the Eurasia Group consultancy. "The broad direction here is to be more inclusive, at least when it comes to the Sunni community, and figure out a power-sharing deal." The vast majority of Iraq's Sunni Arab minority do not actively support IS, but analysts say anger over perceived mistreatment by the Shiite-led authorities means they are less likely to cooperate with the security forces. Kamel noted that any military successes could boost Maliki's chances, with thousands of troops taking part in an ambitious operation aimed at retaking the city of Tikrit, which fell on June 11. Iraqi forces initially wilted in the face of the onslaught but have since performed more capably, with officials touting apparent progress toward recapturing the city. However, the cost has been high. Nearly 900 security personnel were among the 2,400 people killed in June, the highest figure in years, according to the UN. Loyalists are battling militants led by the IS, which Sunday declared a "caliphate," an Islamic form of government last seen under the Ottoman Empire, and ordered Muslims worldwide to pledge allegiance to their chief. The announcement is an indicator of the group's confidence, with the IS leader even calling on Tuesday for skilled professionals to join, and it marks a move against Al-Qaeda, from which the group broke away. Meanwhile, IS militants captured Albu Kamal, a Syrian town on the Iraqi border, after three days of fierce fighting. Iraq has appealed for the US to carry out air strikes against the jihadists, but Washington has not acceded and even said planned deliveries of F-16 fighter jets could be delayed. Baghdad has already purchased more than a dozen Russian warplanes to bolster its forces, and the defence ministry said on Tuesday it has received a second batch of five of the Sukhoi jets. - AFP/fl