When you say 'any of the other ruling parties', please understand that the Congress had the lion's share of power of the post-independence years of India.
They lost half of Kashmir to mercenaries from Pakistan at the very outset and have not been able to recapture it to date. That 'act of courage' is still bleeding India.
Kargil was an acknowledged intelligence failure and was promptly corrected and lost lands recaptured.
The Congress also showed the 'courage' to send our soldiers to Srilanka for a cause they didnt know and got a lot of them killed, with no ultimate gain whatsoever.
