Why has Putin added 15,000 new soldiers to Russia’s army?

Russian President Vladimir Putin has ordered another military expansion, adding 15,500 personnel as Russia's advances in Ukraine have stalled after more than four and a half years of fighting. The decree, signed on Sunday, marks the fourth increase this year, bringing the total authorized strength to 2,441,630 troops. Experts describe the expansion as mainly technical, not a strategic shift, amid mounting Russian losses and limited resources. Ukraine has accused Moscow of preparing another mobilization, which Putin denies as disinformation.