This is the best summary I could come up with:

Russia has started using ballistic missiles supplied by North Korea to attack Ukraine, the White House has said.

The US’s national security council spokesperson, John Kirby, said on Thursday that Russia fired a North Korean ballistic missile into Ukraine on 30 December, but it landed in an open field.

However, Kirby said Russian forces had launched more such missiles as part of a large salvo on 2 January, and their impact had yet to be assessed.

“Due in part to our sanctions and export controls, Russia has become increasingly isolated on the world stage, and they’ve been forced to look to like-minded states for military equipment.

As we’ve been warning publicly, one of those states is North Korea,” Kirby told reporters at the White House, adding it was a “significant and concerning escalation” in Pyongyang’s support for Moscow.

“Russia is relying upon its friends to be able to restore its military stockpiles and enable its war against Ukraine,” Kirby said.

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