Don't sweat it.
Over the past decade or so we also heard similar things about the fierce fighters of Afghanistan and the indomitable Republican Guard.
No army on the planet can beat us on an actual battlefield, with troops and tanks and aircraft. At this point the only real way to inflict even minimal casualties on our forces is to bury bombs in the road in the dead of night and set them off from far away. Using new technology, even this is getting to be a dangerous job for our enemies.
I agree that the Left in this country is doing a great job of exhibiting that "roll on your back and widdle on yourself" approach that they believe discourages aggression. Maybe in dogs, it works.