What more genocide than complete and indiscriminate annihilation of people. Using terrorist tactics to kill, maim your opponents. This will carry on or escalate irrespective of either candidate.
Only thing worse would be Israel using nukes, which is independent of the US President.
The only group of people it is going to make any difference to, are the Americans.
Desert Storm was instigqted by the probability of having costlier oil if the war spreads to other oil producing countries. Plus it did hurt US by having oil rations and costly oil.
Having said that I would agree that Korea and Vietnam war was more due to cold war and not due to attack on US soil.