The president made good on promises to seek revenge against enemies during his first week back in power, signaling in the process that anyone who crosses him in the future could also suffer.In his first week in office, President Trump made clear that his promises to exact revenge on his perceived enemies were not empty campaign pledges — and that his retribution is intended not just to impose punishment for the past but also to intimidate anyone who might cross him in the future.By removing security protections from former officials facing credible death threats, he signaled that he was willing...