The U.S. military is trying to get to the bottom of questions about how many Russians were killed by American forces during operations on February 7 and 8 near the Euphrates River in northwestern Syria.
The deaths are highlighting the concern - Syria could quickly become the battleground for a broader conflict.
Our U.S. correspondent Priscilla Huff reports:
IN: "Perplexing is how...
OUT: SOC
DUR: 1:14
POT: 50 or 44
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