If white does nothing, black will soon penetrate on the a file after c5, b5-b4 and he'll win the game after taking the queenside pawns. In order to get counterplay, white has to play f4 sooner or later. So, to prevent f4, I'd play Ra4 which also helps the b4 lever. Yay!! And then the above mentioned plan: b5 c5 b4 (Ra8 somewhere) and then Ra2
I also agree with your line. Nice find.
I am studying GM Daniel Naroditsky's Mastering positional chess book and he really emphasises prophylaxis :) It's a great book I would recommend it to anyone.
Funny thing! I’m also studying the same book. Highly recommended
I need to check that book :)
Can I buy in amazon?
Yes. It is a very interesting book.