The warning from the UN chief Antonio Guterres comes days after the world body brokered a ceasefire accord between Yemen's government and Houthi rebels to end hostilities in the flashpoint port city of Hudaida.
Kosovo passed laws to build an army, asserting its statehood in a US-backed move that prompted outrage in Serbia, which does not recognise its former province's independence.
UN Secretary General Antonio Guterres is joining the final day of peace talks being held in Sweden between representatives of the Yemeni government and Houthi rebel group.
World leaders gathered in Morocco adopted a UN migration accord, while countries like the United States and European Union nations and other, want national borders to remain sacrosanct.
A majority of UN states have adopted a non-binding global pact to better handle migrant flows, though fewer governments joined than had previously worked on the proposal.
Yemen’s warring sides had earlier agreed to a broad prisoner swap at the start of crucial peace talks in Sweden which aims to end a devastating conflict that has pushed millions of people to the verge of starvation.
In the Polish coal city of Katowice, delegates from nearly 200 nations debate how to meet the Paris target of limiting global warming to between 1.5 and 2.0 degrees Celsius.
Saudi-led air strikes hit the port in Yemen's Hudaida targeting its main port but the port remained open, officials say while diplomatic efforts appeared to have eased the fighting ahead of proposed peace talks in Sweden.
Without mentioning US President Donald Trump by name, French and German leaders and the UN head railed against Trump's world view and the dangers of disregarding international norms as they spoke at the start of the Paris Peace Forum on Sunday.
The 73rd session of the United Nations General Assembly - also known as the 'general debate' - begins on Tuesday, September 25. Each country's representative, often but not always the head of state, addresses his or her fellow leaders and the world.
China voted against a move by the UN to set up a body to prepare evidence of human rights abuses in Myanmar and look into possible genocide in the country's western state of Rakhine.
Turkey's President Recep Tayyip Erdogan and UN Secretary-General Antonio Guterres during a closed-door meeting discussed the Syrian conflict and measures undertaken for setting up a demilitarised zone in Idlib.
Subscribe to our Youtube channel for all latest in-depth, on the ground reporting from around the world.
Copyright © 2018 TRT World.