By Luc Olinga The rivalry between the former U.S. president and the richest man in the world is escalating. Who will back down first, Donald Trump or Elon Musk? The war between the two prolific tweeters over the Republican nomination for the presidential election of 2024 is becoming more intense. The two men’s public personalities on social media have common characteristics: They like confrontation. Nothing stimulates them as much as attacking or bullying those they perceive as opponents. They will stop at nothing to silence their skeptics. They use insults, cruel mockery, humiliation, often i…