As Russia's invasion of Ukraine hit the five-month mark on Sunday, Ukrainian President Volodymyr Zelenskyy pledged to continue inflicting "the greatest possible losses on the enemy." "Even the occupiers admit we will win," Zelenskyy said in a video address on Sunday. "We hear it in their conversations — all the time, in what they tell their loved ones when they contact them." Ukraine will celebrate the Day of Ukrainian Statehood on Thursday, a new national holiday that was decreed by Zelenskyy last August.