Worrying new signs from the war in Ukraine.

There are increasing concerns about the threat of chemical weapons, as Russia signals no let-up

and its brutal assault.

What the Pentagon says about that and the new U.S. weapons flooding into the fight.

Plus, COVID takes over the streets of Shanghai.

One of China's biggest cities is in a lockdown amid the country's largest ever outbreak,

what it means for the fight against the pandemic there and here at home.

And President Biden tackles the spread of ghost guns on the streets of America,

how the White House hopes to stamp out the violence connected

to homemade firearms and untraceable weapons.

Good morning and welcome to way too early on this Tuesday, April 12th. I'm Jonathan Lemire.

Ukrainian President Voltaire Zelenskyy is condemning statements by a Russian separatist leader

calling for the use of chemical weapons against Ukrainian troops defending the besiege city of Mariople.

In his nightly address, Zelensky expressed concerns over the reports

and said his government takes threats like these, quote, very seriously. Take a listen.

One of rupers, occupants, they've said they can use

use chemical weapons

against the security

against the last time.

We're looking at it maximum

serious.

I want to say,

...