The Biden administration has said that around 8,000 soldiers from North Korea are now in Russia near Ukraine’s border and are preparing to help the Kremlin fight against Ukrainian troops in the coming days. The new figure is a dramatic increase from a day earlier, when Defence Secretary Lloyd Austin would only say “some” of the troops had moved toward Ukraine’s border in the Kursk region, where Moscow’s forces have struggled to push back a Ukrainian incursion. It would also mean most of the North Korean troops that the US and its allies say have been sent to Russia are now on the Russia-Ukrain…