Kathmandu, Feb. 1 -- Secretary General Antonio Guterres has warned that the United Nations faces "imminent financial collapse" amid unpaid annual dues and other issues that have drawn global reactions and concerns about the future of the global body.

Guterres sent a letter to 193 UN member states on Wednesday and urged them to pay their contributions; otherwise, the global body will run out of cash by July, according to multiple international media outlets.

He wrote in a letter to all the member states that they had to honour their mandatory payments or overhaul the organisation's financial rules to avoid collapse, the BBC reported.

Experts and diplomats in Kathmandu warned that if the UN faces a financial crisis, as mentioned by the U...