By my count Poland has invaded her neighbours five times and Pakistan and Russia combine for a grand total of zero.
Let's see.
Russians- Nov. 1920 Soviet invasion of Armenia
- Feb 1921 Soviet Invasion of Georgia
- Sept. 1939 Soviet Invasion of Poland
- Nov. 1939 Soviet invasion of Finland
- Aug. 1945 Soviet invasion of Manchuria
- Nov. 1956 Soviet invasion of Hungary
- Aug. 2008 Russian invasion of Georgia
- Aug. 1968 Soviet lead Warsaw Pact invasion of Czekoslovakia
- Dec. 1979 Soviet invasion of Afghanistan
There is more but that should suffice for now.
Pakistanis (as a political entity haven't existed for 100 years)
- October 1947 Pakistanis invaded Kashmir
- August 1965 Pakistani launch a covert offensive into the Indian-administered Jammu and Kashmir
If the number of invasions were to be the deciding factor of who should have nukes then the following countries should give them up:
United Kingdom
USA
Israel
France
Pakistan
China