Conflict: Middle East Political Simulator.
Rounds are fast. It's turn based. Random seed generates a new political clusterfuck every new game so the replay value is good. Super small dos game so it's easily available abandonware and something that takes up 0 space on an office computer.
Downside: you can only play as Israel. :(
But on the upside you can war crime pretty hard so it's not like things are sugarcoated and idealized.