U.S. President Donald Trump has walked away from his ceasefire demand, saying that he supports its “concept” but can push for a peace deal between Russia and Ukraine without one.

Ignoring Ukraine and Europe’s repeated calls that a peace deal be preceded by a ceasefire that would end Russia’s indiscriminate killing of Ukrainians, Trump insisted on Aug. 18 that “one side or the other” may see it as “a disadvantage.”

A ceasefire is an agreement by both parties to pause the fighting without formal