President Trump compared Russia and Ukraine with "children fighting in the park" on Thursday and suggested it might be better to let them keep on fighting for a while. Why it matters: Trump's remarks were another signal that he thinks Russia and Ukraine aren't ready to make peace,

But halting progress, ever-more deadly drone attacks and unmoving negotiating positions seem to have taken their toll. On Thursday, Trump used a striking analogy to concede the warfare was nowhere near over, and that he did not, at that moment, feel it was best to intervene.