Zelenskyy challenges US limits on Ukraine: The Note

In an interview with “World News Tonight” Anchor David Muir, Zelenskyy made clear that he believes there’s more that President Joe Biden can do to help Ukraine.

The TAKE with Rick Klein

Ukrainian President Volodymyr Zelenskyy has earned admiration and respect across a spectrum of leaders in the kind of way most American politicians would envy these days.

Now he's making a direct appeal to the American people at a moment when his country is in real danger and his words might carry particular weight -- or so he hopes.

In an interview with "World News Tonight" anchor David Muir, Zelenskyy made clear he believes there’s more that President Joe Biden can do to help Ukraine, in terms of both military support -- "security in the sky" -- and economic pressure on Russia.