That is the plan. Ba3-b2 comes next and then the queen will capture the a2-pawn $1
1. e2e4  1... e7e5  2. g1f3  2... g8f6 The Petroff defence, which  always had a reputation of a drawish opening, is slowly turning into a silent counter-attacking tool. Remember how Caruana won the Berlin Candidates in 2018 $2 3. f3e5  3... d7d6  4. e5f3  4... f6e4  5. b1c3 This is considered to be the most aggressive way nowadays. 5... e4c3  6. d2c3  6... f8e7  7. c1e3  7... e8g8  8. d1d2  8... b8d7  9. e1c1  9... d7f6  10. f1d3  10... f8e8  11. h2h4 That is the essence of the line. White hopes to be faster than his opponent in the opposite-castling battle. 11... d6d5 But Black has his own arguments. His center is strong and if he manages to trade off the queens his pawn chain might prove more efficient. 12. f3g5 Aronian played this after some thought and Dominguez in turn took almost half-an-hour on his clock for his next move. 12... h7h6  13. f2f3 The point behind the maneuver. Aronian wants g2-g4, but will he have the time for it $2 13... c7c5 A classical response $1 The central counter-attack keeps White busy and the constant danger of his bishops being removed from the attacking diagonals is unnerving. 14. d3b5 Apparently, an over-the-board novelty and also a moral victory for Dominguez who is most happy to get rid of the light-squared bishops. 14... c8d7  15. b5d7  15... d8d7  16. g5h3 A sad retreat, but there is no other choice without the big helper on the b1-h7 diagonal. 16... a8d8 Dominguez is not just overprotecting his most precious pawn, he is already thinking about the d5-d4 break. Black's strategy was a huge success. 17. h3f4  17... e7d6 Creates tactical possibilities. 18. c1b1  18... d7b5 Dominguez is very consistent with his queenside attack. 19. d2c1 Aronian decided to solidify his queenside a bit. 19... d5d4 The center is moving and clears the road for the pieces. 20. c3d4  20... c5c4 The point $1 The d5 square is cleared for the knight, but above all, this pawn will soon open wide the white king's residence. 21. g2g3  21... c4c3  22. b2b3  22... b5a5 Dominguez wants to mate with pieces. His plan is... actually, wait, he will reveal it himself. 23. d1e1  23... d6a3  24. c1d1 