In order to curb wars at this age, these steps should be taken.

1. Any President(s) showing aggression against another country should lead the battle on frontline, armed like and with the soldiers.

2. If there be two President(s) showing aggression towards each other, or are at loggerheads, they both should be armed and given a challenge of gun duel.
The first to die loses and his country stands down.

3. In any combat, the Presidents and their sons should take the lead on the battlefields. They should be the first to touch down on the battlefields before their soldiers and the last to step off after their soldiers.