The C.I.A. enabled Ukrainian drone strikes deep inside Russia. Target #1 was a vast munitions depot in the lakeside town of Toropets, some 290 miles north of the Ukrainian border. The blast was as powerful as a small earthquake. The full story's here: nytimes.com/interactive/20…

The U.S. quietly put military advisers in Ukraine. So as not to evoke memories of the American military advisers sent to Vietnam in the slide to full-scale war, they were known initially as “subject matter experts.” Their full story is here: nytimes.com/interactive/20…

The U.S. military and the C.I.A. worked with the Ukrainians on a plan to topple the Kerch Strait Bridge, linking Crimea to the Russian mainland. Long-range ATACMS would hit the deck while maritime drones would hit the stanchions. Full story here: nytimes.com/interactive/20…