Russia Ukraine war, page-234103

It may well be. Russia has not responded in a way it could have after many red lines have been crossed, but deliberate, ignorant and dangerous insistence on testing those by Washington may result in a response the world does not want.

Seeing German tanks in the Kursk region demolishing ordinary Russian homes and killing Russian civilians and soldiers, may put Putin under too much pressure from within Kremlin not to respond. As you said, the world will have to wait and see.