First story take us to Europe where the United States is deploying 3,000 more service men and women.
They're headed to Germany, Poland and Romania and the American military says additional troops could be on the way.
This is designed to send a signal that the U.S. is prepared to defend its allies in Europe.
More than two dozen countries on that continent are members of NATO, the North Atlantic Treaty Organization.
It was formed in 1949 as a guard against the Soviet Union.
The United States is also a member and NATO's biggest contributor and NATO's concerned that Russia may soon try to invade Ukraine.
Russia's positioned more than 100,000 troops near its western border with Ukraine.
NATO operates on the principle of collective defense.
An attack on one country is an attack on all of them, but Ukraine is not a member of NATO.
Some Ukrainians want their country to be, others want closer ties to Russia.
One thing Russia wants is a promise that Ukraine won't become part of NATO.
Russia's trying to keep European influence at a distance, but the U.S. and European allies have not promised that.
Will American troops get involved if Russia invades?
U.S. President Joe Biden has said no, and the Pentagon says the thousands of American forces headed to the region now would not be fighting in Ukraine.
But they'll be there to assure America's other allies in the region that the U.S. supports them if Russia were to consider crossing other borders for instance.
Russia has said it has no plans to invade Ukraine and some Ukrainians near their country's eastern border don't seem too worried.
This is Ukraine's first line of defense if Russia decides to invade, and it is basic.
Half a dozen soldiers in snow covered trenches, no sign of heavy weapons.
Russian backed separatists are just half a mile away.
He's saying that every night there's fighting once it gets dark.
These front lines have been frozen for years.
A Russian offensive would change that in an instant, but the alarm in Washington is not shared here.
What's amazing to see is that despite the build-up of tanks and heavy weaponry on the Russian side of the border, which is less than 20 miles from here.
Here on the Ukrainian side, there's no sense at all that anyone is preparing for an invasion.