The US white population is in the same condition.
Because the male portion of the U.S. white population isn’t as Xenophobic, causing population decrease isn’t nearly the same challenge. Let the Russian and Ukranian men killt eachother off and exhaust the western arms stockpiles, and after China takes everything north of Afghanistan and east of Poland, take in the Russian and Ukranian women as refugees.
As noted above, wbee can export our liberal white women to China (and our non-binaries to North Korea), and it will be a win-win situation.