(a) whether an agreement was signed with Russia for the procurement of Sukhoi-30 aircrafts;
(b) if so, the number of aircrafts received so far and the time by which the the remaining aircrafts would be received;
(c) the total amount paid to Russia in advance for purchase of these aircrafts;
(d) whether Russia is using Sukhoi-30 aircrafts in their country; and
(e) if not, the reasons therefor and the efforts made by the Government to get back the advance money already paid to Russia?