Market insight and analysis. You're listening to the opening bell of CNBC, Squawk on the Street.

Good Tuesday morning. Welcome to Squawk on the Street. I'm Carl Kingston Air with Jim Kramer, David Faber, Post 9 of the New York Stock Exchange.

There is some flight to safety this morning on these renewed Russia-Ukraine tensions.

Gold is higher, yields are lower.

You can see futures drowning out some of Walmart's beaten rays, the third straight quarter of rising cops.

Our roadmap is going to begin, though, with these geopolitical risks.

Futures lower as Russia-U.S. tensions hit some global markets.

Putin lowering the threshold for a

nuclear strike. Plus, Walmart shares look to be up a bit this morning. The retail giant hiked

its outlook yet again, and it is seeing what it expects will be a strong holiday season.

We're also watching tech antitrust headwinds. The DOJ is reportedly set to ask a judge to force Alphabet's Google Unit to sell off its Chrome Internet browser, amongst other things.

Let's begin with these geopolitical tensions weighing on stocks worldwide. The Kremlin announcing Russian President Vladimir Putin has updated his country's

nuclear doctrine. It says Russia could use nuclear arms if it's attacked by a country backed

by a nuclear power. Moscow's defense ministry claims Ukraine has carried out its first strike on

Russian territory using these U.S. long-range missiles, and that comes just days after a report

stating that the Biden administration lifted restrictions on Ukraine's use of such missiles against

targets inside Russia. Jim, this morning, you wrote something like this, does tend to get yields

lower. Yeah, I mean, look, we're in one of the situations where you were trying to figure out why Biden didn't do this before. Why did they not have long-range missiles? And well, the reason why was that obviously there would be a statement about a nuclear response. This has been what everybody feared. I think at the same time, David, there's a belief, this is really it. I mean, if you're going to have a negotiation, this is how the negotiation starts.

You say, okay, look, this is no longer, this is out of control, and maybe we've got to sit down and figure out what to do, whether it's solved by this administration or the next administration, this is the escalation that everyone had feared.

And here it is.

Yeah, I think the expectation is it's the

incoming administration that conceivably will try to settle things as President

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