PARIS — KNDS is proposing a main battle tank with a turret and gun developed in France and mounted on the hull of Germany’s Leopard 2 as an intermediate solution to replace the French Army’s aging Leclerc tanks, which are expected to reach the end of their service life before the arrival of a next-generation tank. The tank proposal unveiled at the Eurosatory defense show on Monday featured an unmanned turret with a 120mm auto-loader smoothbore gun developed by KNDS France, with the possibility