US president Joe Biden, UK PM Boris Johnson and other G-7 leaders will hold a virtual meet Ukrainian president Volodymyr Zelensky on Sunday, reports hindustantimes.com..

Meanwhile, the UK announced an aid of $1.3 billion as military support to Ukraine.

“Putin's brutal attack is not only causing untold devastation in Ukraine – it is also threatening peace and security across Europe,” UK PM Boris Johnson was quoted. This assitance raises UK's pledge to the war-torn nation.

Meanwhile, Ukrainians across the country were bracing on Saturday for a potentially fierce Russian assault over the weekend, as both sides ratcheted up fighting in the east in the lead-up to Russia’s Victory Day, an annual holiday marking the Soviet defeat of Nazi Germany that is seen as a possible turning point in Moscow’s offensive.

In his evening address the night before, President Volodymyr Zelensky of Ukraine implored citizens to heed local curfews in the face of an increasing threat of Russian attacks. “I ask all our citizens — especially these days — not to ignore the air raid sirens,” he said. “Please, this is your life, the life of your children.”

All women, children and elderly civilians have been evacuated from the Azovstal steel mill in Mariupol, Ukraine’s deputy Prime Minister said on Saturday, despite what military officers said was an ongoing Russian assault at the plant.

“This part of the Mariupol humanitarian operation is over,” deputy Prime Minister Iryna Vereshchuk wrote on the Telegram, a messaging app.

The Soviet-era steel mill, the last holdout in Mariupol for Ukrainian forces, has emerged as a symbol of resistance to the wider Russian effort to capture swathes of eastern and southern Ukraine.

Under heavy bombardment, fighters and civilians have been trapped for weeks in deep bunkers and tunnels that criss-cross the site.