"A thousand days of war is a tremendous challenge. Ukraine deserves to make next year a year of peace," Zelensky said.Russia launched a full-scale invasion of Ukraine on Feb. 24, 2022, extending their aggression beyond the occupied Donbas region in attempt to effectively end the statehood of independent Ukraine.In his online address, Zelensky thanked the partners for their support and urged them not to forget that "the united strength of Europe" is greater than Russian President Vladimir Putin."If we could stop Europe's way of life from falling, then we can surely push Russia towards a just peace," Zelensky added.The president also stressed the need for tougher sanctions, especially against Russia's so-called "shadow fleet" that transports crude oil and oil products in circumvention of existing restrictions.