Zelensky says Russia's shift represents Putin's desire to appear strong at a time when his military is losing ground in a key frontline region. Ukrainian President says Russia is attacking infrastructure in drive to force residents to flee Key points and original sources are listed below.

• Zelensky says Russia's shift represents Putin's desire to appear strong at a time when his military is losing ground in a key frontline region.S1

• Ukrainian President says Russia is attacking infrastructure in drive to force residents to fleeS2