Richard Shelby actually said...

We have a resurgent Russia under Putin, who seems to be very venturesome, to say the least, and nobody to rein him in.

I see that as a real danger.

We have a China that thinks long range, that we do a lot of trade with, but is determined to modernize their nuclear weapons system.

The only people I know that can rein him in would be China, if they chose to.