The situation in Aleppo is worse than a slaughterhouse, UN Secretary General Ban Ki-moon has said.
Mr Ban's comments were made at a UN Security Council meeting just hours after Russian or Syrian warplanes bombed two hospitals in the besieged city.
A slaughterhouse is "more humane" than the current situation in Aleppo, he added.
Mr Ban continued: "Hospitals, clinics, ambulances and medical staff in Aleppo are under attack around the clock.
"According to Physicians for Human rights, 95% of medical personnel who were in Aleppo before the war have fled, been detained or killed.
"This is a war against Syrian health workers."
The UK must show more "compassionate global leadership" in the refugee crisis, UN Secretary-General Ban Ki-moon has told ITV News.Read the full story ›
UN Secretary General Ban Ki-Moon has paid tribute to King Abdullah, saying that he left a "tangible legacy" both at home and on the world stage:
King Abdullah made major contributions to the development of the Kingdom. Under his leadership over many decades in different high-level positions in Government, the Kingdom of Saudi Arabia achieved remarkable progress and prosperity for its people. The Secretary-General pays tribute to King Abdullah’s efforts to address regional and international challenges at a time of turmoil and rapid change, and to promote dialogue among the world's faiths. As the driving force behind the Arab Peace Initiative, King Abdullah left a tangible legacy that can still point the way toward peace in the Middle East.
UN Secretary General Ban Ki-Moon has called for the "unconditional" release of two Japanese citizens held by Islamic State militants, the Kyodo news agency reports.
His spokesman Stephane Dujarric said Ban is "obviously very concerned about the fate of these two hostages," as he is about the "fate of all people" taken by armed groups in Iraq and Syria.
A spokesman for UN Secretary-General Ban Ki-Moon has said that any violation of the ceasefire agreed today would be "utterly irresponsible".
He said the blockade of Gaza must end, and that the territory must be brought back under the control of one legitimate Palestinian government adhering to Palestine Liberation Organisation commitments.
"Israel's legitimate security concerns must be addressed," he added.
UN Secretary-General Ban Ki-moon has said he is deeply concerned at reports of a Russian aid convoy entering Ukraine without permission from the nation's government.
Ban's spokesman Stephane Dujarric said in a statement: "While recognizing the deteriorating humanitarian situation, any unilateral action has the potential of exacerbating an already dangerous situation in eastern Ukraine."
Pope Francis has urged the head of the United Nations to respond to the "heartfelt cries of despair of Christians and other religious minorities" in Iraq.
In a letter to Secretary General Ban Ki-Moon, he said:
I write to you, Mr Secretary General, and place before you the tears, the suffering and the heartfelt cries of despair of Christians and other religious minorities of the beloved land of Iraq.
The pontiff, who is on a visit to South Korea, has been commenting on the Iraq crisis on Twitter in recent days, and has called on Muslim religious leaders to condemn the actions of Islamic State militants.
United Nations Secretary-General Ban Ki-moon called on the Israeli and Hamas leaders to "show their humanity" and added that ending the Middle East conflict was "a matter of political will".
It's a matter of their political will. They have to show their humanity as leaders, both Israeli and Palestinian.
Why these leaders are making their people to be killed by others? It's not responsible, (it's) morally wrong.
The U.N. Secretary General Ban Ki-Moon has warned that Syria's announcement of plans for a presidential election will undermine attempts to find a political solution to the country's three-year-old civil war.
U.N. spokesman Stephane Dujarric said Ban Ki-Moon and Syria mediator Lakhdar Brahimi have "warned that the holding of elections in the current circumstances amid the ongoing conflict and massive displacement will damage the political process and hamper the prospects for a political solution."
He added: "Such elections are incompatible with the letter and spirit of the Geneva communique," referring to an agreement made in June 2012 on seeking a political transition in Syria.
UN Secretary-General Ban Ki-moon has voiced his alarm over the escalating Ukraine crisis in a phone call with Russian President Vladimir Putin.
"The Secretary-General ... underlined that any deepening of the crisis would be profoundly detrimental for all concerned; hence the need for everyone to work to de-escalate the situation," a statement from Ban's office read.