Zelensky: 100,000 trapped in Mariupol with "no food, no water"

• Despite the bombardment, more than 7,000 Mariupol residents had been rescued from the besieged city in the past 24 hours, Zelensky said.

The big picture: Mariupol is encircled by Russian forces, which have bombarded the strategically important city with airstrikes for days.

• Russia's military needs to take Mariupol in order to create a land corridor between Crimea and the Russian-backed regions of Luhansk and Donetsk in southeastern Ukraine.
• Hundreds of people have died during the Russian military assault on the city. An art school, a mosque, a theater and other civilian targets have been bombed in recent days.

What to watch: The U.K. Ministry of Defense said in an intelligence update on Wednesday that Russia's military is "attempting to envelop Ukrainian forces in the east of the country as they advance from the direction of Kharkiv in the north and Mariupol in the south."

• Russian forces were "still attempting to circumvent Mykolaiv as they look to drive west towards Odessa," the Defense Ministry noted.

• "The battlefield across northern Ukraine remains largely static with Russian forces likely conducting a period of reorganisation before resuming large-scale offensive operations," per the intelligence report.

Go deeper... Dashboard: Russian invasion of Ukraine

Editor's note: This article has been updated with new details throughout.