A new resolution from the UN Security Council (UNSC) could cut millions of dollars of revenue from North Korea’s coal exports, Reuters reported over the weekend.

The resolution – which is still in a draft stage – will limit the North’s yearly coal exports to $400.9 million, a huge reduction in the DPRK’s current export totals.

The DPRK sent over 17 million tons of coal to neighboring China last year, earning North Korea nearly $1 billion. So far in 2016, export volumes have been even higher.

“On paper, new coal restrictions have the potential to notably curb a key source