Russia says it'll retaliate over the expulsion of more than a hundred of its diplomats from several countries in Europe and North America.
The Kremlin has called the US-led response to the poisoning of a former spy and his daughter in Britain a "provocative gesture."
And Russia's ambassador to the US says the move will "destroying what is left" of ties between the two countries.
Some 60 Russian intelligence agents stationed in Washington, Seattle and the UN in New York are being told to leave within a week.
US correspondent Steve Mort says the White House is walking a diplomatic tightrope.
IN: "On the…
OUT: … with that"
DUR: 60 seconds
CLIP: http://www.fsnradionews.com/feeds/0326Russia-Mort.mp3
ALT: Moscow correspondent Lucy Taylor says a Russian response could come soon.
IN: "Probably all…
OUT: … last week"
DUR: 22 seconds
CLIP: http://www.fsnradionews.com/feeds/0326Russia-Taylor.mp3
ALT: Berlin correspondent Ira Spitzer says Germany is one of many EU countries to join the list of those expelling Russian diplomats.
IN: "The German…
OUT: … to this"
DUR: 33 seconds
CLIP: http://www.fsnradionews.com/feeds/0326Russia-Spitzer.mp3
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