I chose:
1) Communications: Computers, wire, ect. To stop scatter the enemy, prevent battleplans forming, and hold off reinforcements
2) WMD of any kind. That one's a no-brainer. Any country at war posessing WMDs will beat a country without WMDs. Fact. (if it uses them, that is)
3) Sabotage Targets: Power Grid, Water Pipes, ect Prevent the vital supplies reaching troops and production plants. Stop the power grid and people are affected directly, which is also a good propoganda victory.
And bomb the banks. Just for the hell of it.