Libya has decided to block the UN plan that would send 200 more soldiers to guard UN staff members, diplomats and officials operating inside the north African country, according to Agence France-Presse. 
Last month, the UN Security Council (UNSC) approved requests that would allow an additional 235 troops to be deployed to Tripoli due to "mounting threats" of an attack on an UN mission.
Originally, Libya agreed to the plan, but then recently decided that supporting the plan would be creating "outside interference" in its fragile country situation.
"It doesn't look possible that the proposal can now go ahead," Britain's U.N. ambassador Mark Lyall Grant told AFP and other reporter.
Lyall Grant further added that the 200 staff in the UN mission in Libya (UNSMIL) already "don't have a great deal of security," and that the UN is "waiting for a further proposal."
Since the Nov. 15 riots in Tripoli that left many protestors killed,  the UNSC has "stressed the urgent need to strengthen military and police institutions" to mitigate the chaos.The council further added that the growing tension and turmoil in Tripoli as well as Libya's Benghazi "threatens to 'undermine the transition to democracy'" in the already fragile state.
The north African country has been a site of chaos as the country's weak central government increasingly clashes with local militias since the oust of former dictator Moammar Gaddafi in 2011.