- Russia stands to lose 1.8 million troops if it takes four oblasts in Ukraine, the UK's army chief said.
- Moscow has designated Kherson, Donetsk, Luhansk, and Zaporizhzhia as its own territory.
- But its current attrition rate means it will take five years to succeed, Gen. Sir Roly Walker said.
Russia would likely take up to 1.8 million wounded and dead over five years to achieve its goal of fully capturing four major Ukrainian regions, said the new chief of the British Army.