Ukraine's President Volodymyr Zelensky revealed that 55,000 Ukrainian soldiers have been killed in the four-year war with Russia. He shared this figure in an interview with France 2 TV. Zelensky also said many soldiers are officially missing. Both Ukraine and Russia often report enemy losses but rarely their own. Meanwhile, the BBC confirmed nearly 160,000 Russian fighters killed in Ukraine. US former President Donald Trump has taken an active role in trying to end the war that started with Russia's invasion on February 22, 2022. Special US envoys Steve Witkoff and Jared Kushner met with Russian and Ukrainian negotiators in Abu Dhabi for a second day of talks. Witkoff described the sessions as "detailed and productive" but said "significant work remains." The main challenge is territory, with Russia demanding Ukraine cede control of the eastern Donbas region. Zelensky's latest death toll marks an increase from 43,000 soldiers killed reported in December 2024. He noted many missing people have not been accounted for, with Ukraine’s interior ministry listing over 70,000 missing soldiers and civilians six months ago. Families hope some missing soldiers are prisoners held in Russia, though access to Russian prisons is limited. The alternative is some bodies remain unrecovered or unidentified. Occasionally, Ukraine and Russia exchange bodies and prisoners. The Abu Dhabi talks led to an agreement to swap 314 prisoners—the first exchange in five months, Witkoff said. "While significant work remains, steps like this demonstrate that sustained diplomatic engagement is delivering tangible results and advancing efforts to end the war in Ukraine," he added. The talks resumed as Russia renewed attacks after a week-long pause requested by Trump. Russian strikes targeted Ukraine’s energy systems, causing widespread outages during harsh cold weather, with temperatures dropping to -20°C.