The United States said Tuesday it was "horrific" watching in real time the battle for the Syrian border town of Kobane, insisting it did not want to see the city fall to Islamic militants.

The blitz on Kobane by the Islamic State group follows a three-week siege that sent 190,000 refugees streaming into Turkey -- and despite U.S.-led coalition air attacks, the town appears on the verge of falling.

Algerian soldiers shot dead three armed Islamists southeast of the capital on Tuesday, a defense ministry statement said.

It said special forces killed the three militants in the Biskra region, 400 kilometers (250 miles) from Algiers, and that guns and ammunition were recovered.

The international community should immediately act to defend the besieged Syrian town of Kobane from the jihadist Islamic State group, the UN's envoy to Syria said on Tuesday.

"The world, all of us, will regret deeply if ISIS (Islamic State) is able to take over a city which has defended itself with courage but is close to not being able to do so. We need to act now," Staffan de Mistura said in a statement.

Dozens of Kurdish demonstrators burst into the European parliament in Brussels on Tuesday to protest the Islamic State group's attack on the town of Kobane on Syria's border with Turkey.

Brandishing Kurdish flags and effigies of their jailed separatist leader Abdullah Ocalan, the men and women broke through a police barrier to enter the hall of the building.

Israeli Prime Minister Benjamin Netanyahu told police chiefs and the Shin Bet security service Tuesday to get tough on violent Palestinian protest in Jerusalem, which has spiked in recent months.

"The prime minister instructed that forces be strengthened in areas of conflict and that they should act aggressively against rioters," his office said after a special meeting of the security chiefs, also attended by Jerusalem's mayor and government legal advisers.

Shiite rebels rejected a new Yemeni prime minister Tuesday just hours after his appointment, in a blow to hopes of restoring order two weeks after they overran the capital.

"We strongly reject this nomination, which is not in accord with the will of the nation and does not respond to the wishes of the people," the rebels' politburo said after the appointment of Ahmed Awad Mubarak.

A Moroccan consul in the South African capital Pretoria has been found dead in a pool of blood at his guesthouse, his embassy said Tuesday.

Police are still investigating how and why Fatmi Noureddine was killed. An autopsy is being carried out.

A British judge on Tuesday ruled Bahrain's Prince Nasser bin Hamad Al-Khalifa does not have legal immunity from prosecution following a review requested by a Bahraini torture survivor.

"It's a victory for the people of Bahrain," Sayed Al-Wadaei, director of advocacy at the Bahrain Institute for Rights and Democracy campaign group, told AFP after the hearing.

One person was killed on Tuesday in southeast Turkey when police clashed with hundreds of pro-Kurdish protesters demonstrating over the onslaught by jihadists on the Syrian border town of Kobane.

There were conflicting reports about how the 25-year-old protester was killed in the clashes in the city of Mus, with the Hurriyet newspaper saying the protester died of a gunshot wound after being caught in crossfire.

Iran criticized the "passivity of the international community" Tuesday regarding the besieged Syrian border town of Kobane and said the world should help President Bashar Assad confront "the terrorists".

The comments by foreign ministry spokeswoman Marzieh Afkhan came shortly after Turkey's president said Kobane was on the verge of falling to jihadists fighting for the Islamic State (IS) group.