It added that Western military support remains vital to Ukraine's war effort.
Russia will struggle to replace the increasing numbers of troops lost to death and injury on the frontline if the West continues to back Ukraine, a US think tank said.
But Russia can't both replace its troops lost in Ukraine, and solve its workforce crisis, said the ISW.
AdvertisementPresident-elect Donald Trump has pledged to bring peace to Ukraine and has been critical of US support for Ukraine.
"The continued, regular provision of Western military assistance to Ukraine remains crucial to Ukraine's ability to continue defending against Russian offensive operations and inflicting unsustainable losses on the Russian military in 2025," the ISW said.
Persons:
Petro, ArmyInform, Donald Trump, Keith Kellogg, Kyiv didn't, Joe Biden
Organizations:
UK's Ministry of Defence, The, Reuters, Ukraine, Kyiv, Trump, Russian
Locations:
Russia, Ukraine, US, Russian, Kursk Oblast, Ukrainian, Donetsk, Moscow