Dec 23 (Reuters) - The Trump administration is not satisfied with the Rwanda-backed M23's withdrawal from a strategic town in eastern Congo, a senior U.S. official told Reuters, as residents reported persistent clashes nearby on Tuesday.

M23 seized the town of Uvira, near the border with Burundi, on December 10, days after Congolese President Felix Tshisekedi and Rwandan leader Paul Kagame met President Donald Trump in Washington and reaffirmed a U.S.-brokered peace deal.

The capture marked the rebels' biggest advance in months, fueling fears of regional spillover from fighting that has killed thousands and displaced hundreds of thousands since January.

After U.S. Secretary........

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