The U.S. government is telling Americans it's "past time" to leave Ukraine. But James Berk, an optician from New Jersey, has a Ukrainian wife and a newborn baby. For now, they're staying put.

The United States should tell Russia its troops need to be back in their regular barracks by March 1, argues former diplomat Brett Bruen.

As much as 40% of Europe's natural gas supply comes from Russia, a reliance that puts U.S. allies like Germany in a jam when it comes to finding a sanctions solution to the crisis.

Here is how the history of NATO, Russia and Ukraine got so complicated.

With more than 100,000 Russian troops on his borders, President Volodymyr Zelenskyy said Friday that the reaction of world leaders had created a "panic" in his country.