The two sides signed a memorandum of understanding electronically, as Trump lashed out at critics of the move, calling them 'jealous and fools'.
In what is described as one of the largest drone attacks on Moscow, Kyiv strikes a major oil refinery while Zelensky threatens to 'burn' the Russian capital.
On the sidelines of the G7 summit in France, the US president hailed the agreement as achieving all of Washington's core objectives.