"If we do not get the EU's response right and do not give Ukraine enough support to stop Russia, we are next. We must therefore be defense-ready and shift to a 'war economy' mode," Michel said.
Zelensky told a news conference in Kyiv that he could not disclose the number of wounded because it would help Russian military planning.
That 10-year cost estimate is up from $411 billion last March, with housing needs topping the list at $80 billion or 17%.
Officials have said the Russian forces were trying to repeat attacks of the last winter when the Ukrainian power sector was severely damaged, resulting in long blackouts for millions of people.
Given Zaluznhyi's popularity and proven ability as an inspiring commander, the fact that Zelensky is replacing him may reflect the desire for a new approach on the battlefield.
The attack showed Russian forces were "trying to inflict as much grief as possible on our land".
A married couple were killed and 11 people were hurt in the area outside Kyiv, the regional administration said. A dozen residential buildings and at least 60 cars were also damaged.
The inauguration ceremony took place in the heart of the city. This event marked the opening of the expansive educational building of Chabad Odessa, named Beit Ovadia.
The study showed that Ukrainian scientists are getting more and more disconnected from the Ukrainian scientific community, proving dangerous for the future of Ukraine and Ukrainian research.
The attack began hitting different districts of Kyiv in the early hours of Saturday, with more waves coming as the sun came up.