$)$: UN provides its staff and former staff with post$-$employee benefits. The liabilities become due for payment to former staff once former staff become eligible following the separation$/$retirement or death from UN$.$ The liabilities arising from post$-$employment benefits are determined by independent actuaries and those employee benefits are established in accordance with the Staff Regulations and Rules of the UN$.$ At $31$ December $2023,$ the liabilities arising from post$-$employment benefits are valued at US$$1\mathrm{.}1$ billion. This liability is only partially funded by UN$.$ As the Head of Field Finance, what approaches can be taken to ensure that UN has sufficient funding availability to cover future cash outflows for the post$-$employee benefits liabilities?