Sentence examples for source of concerning from inspiring English sources

The Pentagon chief identified President Vladimir Putin as the source of "concerning behavior by Russia," and assured his audience of defense analysts at the Atlantic Bridge think tank in Berlin that the Western alliance has no desire to have a confrontational relationship with the Kremlin.

Is Facebook a particular source of concern?

One source of concern was the sponsors.

But he remains a source of concern.

Still, another source of concern is Prorsum.

Every cough is a source of concern.

Mauritania is also a source of concern.

That's not the source of concern.

Today, though, Beijing remained the major source of concern.

Baths and showers have become a source of concern.

One source of concern is Portugal's fetish for infrastructure.