What are the possible drawbacks of democracy

Control of people public opinions, Less political education.

This willingness to continue fighting ultimately leads to the result that after roughly 18 months have passed, the advantage passes to the autocrat. Democracies at that point become far more likely than autocratic states to quit and more willing to settle for draws or losses. The authors also find that relationships between war outcomes and a number of control variables such as military-industrial capacity and military strategy vary over time.