Military and maritime agreements between Turkey and Libya's government in Tripoli represent a "clear escalation" of the conflict in the country, the UN's Libya envoy said.
Ghassan Salame's remarks came as Egypt called for an urgent meeting on Tuesday of the Arab League to discuss developments in the neighbouring country.
Libya has been racked by conflict since a Nato-backed uprising toppled and killed dictator Muammar Qaddafi in 2011, with rival administrations in the east and the west vying for power.
In April, Field Marshal Khalifa Haftar, who is based in the east, ordered his Libyan National Army to seize the capital Tripoli from the UN-recognised Government of National Accord and allied militias.
Last week, Turkey's President Recep Tayyip Erdogan announced plans to send troops to support the GNA against the attack.
Ankara signed a security and military co-operation deal with the GNA in November, as well as an agreement on maritime jurisdiction in the Mediterranean.
The agreements signed between Ankara and the GNA represent "a clear escalation of the conflict" in Libya as more interests from outside the country become involved, Mr Salame told the French daily Le Monde.
"The past few weeks have been marked by a worsening of this outside interference," Mr Salame said.
"You had the two agreements, military and maritime, signed on November 27 by the GNA and Turkey, to which are added the declarations of the Turkish authorities [on sending troops].
"And you have, on the other side, several countries that support Haftar's war effort at the entrance to Tripoli."
The UN envoy, who took up the post in 2017, also deplored what he called the "internationalisation of the conflict".
Mr Salame noted the presence of "Arabic-speaking groups, probably from Syria, who are fighting alongside the GNA and the arrival of planes from Syria to the airport in Benghazi", in eastern Libya.
"We are facing an extremely dangerous situation where the credibility of the UN is at stake," he said.
Mr Salame said he was disappointed at the failure of the UN Security Council to pass a resolution calling for a ceasefire in Tripoli.
"All of this causes outside interference to multiply and get worse," he said.
Fresh faces in UAE side
Khalifa Mubarak (24) An accomplished centre-back, the Al Nasr defender’s progress has been hampered in the past by injury. With not many options in central defence, he would bolster what can be a problem area.
Ali Salmeen (22) Has been superb at the heart of Al Wasl’s midfield these past two seasons, with the Dubai club flourishing under manager Rodolfo Arrubarrena. Would add workrate and composure to the centre of the park.
Mohammed Jamal (23) Enjoyed a stellar 2016/17 Arabian Gulf League campaign, proving integral to Al Jazira as the capital club sealed the championship for only a second time. A tenacious and disciplined central midfielder.
Khalfan Mubarak (22) One of the most exciting players in the UAE, the Al Jazira playmaker has been likened in style to Omar Abdulrahman. Has minimal international experience already, but there should be much more to come.
Jassim Yaqoub (20) Another incredibly exciting prospect, the Al Nasr winger is becoming a regular contributor at club level. Pacey, direct and with an eye for goal, he would provide the team’s attack an extra dimension.
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Tips for newlyweds to better manage finances
All couples are unique and have to create a financial blueprint that is most suitable for their relationship, says Vijay Valecha, chief investment officer at Century Financial. He offers his top five tips for couples to better manage their finances.
Discuss your assets and debts: When married, it’s important to understand each other’s personal financial situation. It’s necessary to know upfront what each party brings to the table, as debts and assets affect spending habits and joint loan qualifications. Discussing all aspects of their finances as a couple prevents anyone from being blindsided later.
Decide on the financial/saving goals: Spouses should independently list their top goals and share their lists with one another to shape a joint plan. Writing down clear goals will help them determine how much to save each month, how much to put aside for short-term goals, and how they will reach their long-term financial goals.
Set a budget: A budget can keep the couple be mindful of their income and expenses. With a monthly budget, couples will know exactly how much they can spend in a category each month, how much they have to work with and what spending areas need to be evaluated.
Decide who manages what: When it comes to handling finances, it’s a good idea to decide who manages what. For example, one person might take on the day-to-day bills, while the other tackles long-term investments and retirement plans.
Money date nights: Talking about money should be a healthy, ongoing conversation and couples should not wait for something to go wrong. They should set time aside every month to talk about future financial decisions and see the progress they’ve made together towards accomplishing their goals.
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