A vital slush fund controlled by North Korean leader Kim Jong-un has reportedly been drained by a series of missile and nuclear tests, and extravagant vanity projects.

Two Chinese sources with connections to North Korean government officials told Radio Free Asia that Kim has been exhausting his inheritance, a fund intended to run the country, since coming to power after the death of his father, Kim Jong-il, in 2011.

They alleged that the leadership’s last-minute decision to take part in the South Korean Winter Olympics was part of a wider plan to boost the nation’s failing economy.

“Due to Kim Jong-un’s extravagant spending, the slush fund from his father, Kim Jong-il, is running out,” said one source.

The source claimed to be “well-acquainted” with officials from Bureau 39, a secretive government body tasked with obtaining foreign currency for the North Korean elite through illicit activities.