According to the article by William Arkin, the Newsweek dated March 30:
Russia's armed forces are reaching a state of exhaustion, stalemated on the battlefield and unable to make additional gains, while Ukraine is slowly pushing them back, continuing to inflict destruction on the invaders.
After a month of intense fighting, the stalemate has forced the Kremlin to consider a Ukrainian proposal that ends the fighting short of annihilation, opening up the way for a rapid cessation of hostilities. And it has pledged to pull back its forces threatening Kyiv.
"The war in Ukraine is over," a high-level officer of the Defense Intelligence Agency tells Newsweek. (The officer, who was not authorized to speak on the record, requested anonymity.)
But that's not how the Biden administration sees it. Secretary of State Antony Blinken told reporters in Morocco on Tuesday, "There is what Russia says, and there is what Russia does. We're focused on the latter."