Boko Haram militants in Nigeria pledged allegiance with Islamic State militants, according to an online video posted on Saturday.

“We announce our allegiance to the Caliph.. and will hear and obey in times of difficulty and prosperity, in hardship and ease,” said militant group in their video.

The UN High Commissioner for Human Rights, Zeid Ra'ad Al Hussein, hailed a decision by Nepal’s top court rejecting the possibility of amnesty for suspected perpetrators of war crimes and other human rights abuses.

Mr Zeid praised the court for "upholding international standards relating to accountability for gross violations of international human rights law and serious violations of international humanitarian law".

"It is essential that the commissions adopt this victim-centred approach, as many victims have felt completely excluded from the process so far," said Mr Zeid in a statement.

At least 28 countries have expressed support for a separate Kurdish state should the Kurdish Regional Government (KRG) declare independence, said the deputy speaker of the Kurdistan parliament, Jaafar Eminiki.

“The international community’s outlook is changing concerning Kurdish independence,“ said Mr Eminiki.

The Palestinian leadership said that it would suspend security co-operation with Israel on Thursday night.

The Palestinian Liberation Organisation, announced the decision as a response to “ongoing Israeli violations and crimes against the people of Palestine,” after a two day meeting in Ramallah, reports the Financial Times.

The destruction of heritage and cultural sites by Islamic State militants tantamount to war crimes said the United Nations cultural agency UNESCO.

The UNESCO Director General Irina Bokova in a statement condemning the destruction of Assyrian archaeological sites, said,

“We cannot remain silent. The deliberate destruction of cultural heritage constitutes a war crime.”

The United Nations Security Council will vote on a resolution condemning the use of chlorine as a chemical weapon in Syria and threatens unspecified action if further violations occur, on Friday.

The resolution, reportedly pushed for by the United States "condemns in the strongest terms any use of any toxic chemical, such as chlorine, as a weapon in the Syrian Arab Republic."

However, the resolution itself does not blame any of the warring sides in Syria for the use of chlorine as a weapon during the conflict.

The Organisation for the Prohibition of Chemical Weapons (OPCW) had earlier reported that chlorine gas had been used "systematically and repeatedly" as a weapon in Syria. Witnesses have reported chlorine gas being fired from helicopters – with only the Syrian government having access to such aircraft.

 Amnesty International and Human Rights Watch warned that war crimes may have been committed when Egypt carried out airstrikes in the Libyan city of Derna last month.

At least 7 civilians, including 3 children were reportedly killed in the attack.

Egyptian Foreign Ministry Spokesperson Badr Abdelatty however rubbished the claims, saying they were “nonsense reports based on wrong information”.

“The Egyptian authorities must publicly disclose detailed information on all airstrikes carried out in Derna on 16 February, including targets, and measures taken to avoid incidental harm to civilians,” said Hassiba Hadj Sahraoui, Middle East and North Africa Deputy Director at Amnesty International.

“Attacks which do not discriminate between civilians and fighters are war crimes. When perpetrated as part of a systematic and widespread attack against a civilian population, murder is a crime against humanity.”

Human Rights Watch also called for a “speedy and transparent investigations into the deaths,” with Sarah Leah Whitson, Middle East and North Africa director saying,

“Egypt and Libya say they are fighting extremists affiliated with ISIS, but that doesn’t give them a free hand to kill civilians.”

Russian Foreign Minister Sergei Lavrov accused Islamic State of committing genocide in Iraq, by targeting Christians in the region.

Speaking at the sidelines of the United Nations Human Rights Council session, currently underway in Geneva, Mr Lavrov said,

“There are awful crimes, Christians are killed, they are burned alive, 21 Egyptian Copts have been beheaded in Libya, all these are signs of genocide following the definition of the UN.”

The international community must be ready to support Libyan efforts to tackle Islamic State militants, said the United Nations Special Envoy to Libya Bernardino Leon, during a briefing to the United Nations Security Council on Wednesday.

The UN Security Council voted unanimously in favour of a resolution establishing a sanctions regime on warring factions in South Sudan, ahead of a deadline for the sides to reach a peace deal later this week.

The resolution voted in on Tuesday, stopped short of travel bans, asset freezes and preventing the purchase of more weapons, but threatens to punish those who interfere with the ongoing peace process.

All 15 UN Security Council members voted in favour of the resolution after it was proposed by the United States. US Ambassador Samantha Power said that "those who frustrate peace must begin to pay the price," adding the council was "sending a very clear signal to those who continue to choose war over peace - you will be held to account now as we urge you to compromise to reach an agreement and later when you are considering whether to follow through on its terms".

The home secretary Theresa May, was accused of allowing “state sponsored abuse of women” at th Yarl’s Wood detention centre after a Channel 4 investigation uncovered systematic racial and physical abuse of detainees.

German Chancellor Angela Merkel warned Russia that any serious violation of the current ceasefire in east Ukraine would prompt Europe to impose further sanctions on Moscow for supporting the separatist militants, reports Reuters.

Opposition fighters have launched a fierce assault on Syrian government intelligence headquarters in Aleppo on Wednesday, with at least 34 people dead from both warring sides.

Opposition fighters linked to the Al Nusra Front and other Islamist organisations detonated a bomb placed in a tunnel running underneath the headquarters, with the blast being heard throughout Aleppo. The European-Mediterranean Seismological Centre (EMSC) reported a 2.3-magnitude tremor at the time of the explosion.