First of all, Lebanon was never in the 21st century in the first place, due to the 18 year Israeli occupation. And the world wonders why the Arab world is still a third world region.... . The answer to that question is the illegal-soon to be exterminated State of Israel.
Those two soldiers are dead, which means, there is nothing to return. It would have beeb much easier for Israel to declare itself illegal(which it is), give up its statehood, and throw itself to the mercy of the international community. That will solve this crisis, not the two soldiers or any other plan the pathetic West comes up with.
Any plan which includes Israel to be alive and well WILL FAIL. Mark my words.