McMaster urges West to do now "what we would do after Putin kills a million people"

Former White House national security adviser H.R. McMaster hopes President Biden and European leaders, who are meeting in Brussels on Thursday, find ways to ramp up pressure on Russian President Vladimir Putin before the number of innocent Ukrainians killed in the war reaches an unthinkable level.

If Russian forces continue to bombard population centers in Ukraine, they could kill a million people and force about 10 million others to flee their country, McMaster said Thursday on "CBS Mornings."

"So I think what's really important, and I hope this is what's happening in Brussels right now, is: let's do right now what we would do after Putin kills a million people," the retired lieutenant general said.