Key developments on Feb. 27
* Zelensky sees 'window' for peace deal before US midterms
* Flamingo threat triggers unprecedented missile alert across Russia, 1 claimed shot down
* From Starlink to 'digital officers,' Fedorov on first month as Ukraine's new Defense Minister
* Russia, Ukraine, agree to 'local truce' at occupied Zaporizhzhia nuclear plant to repair key backup power line
Ukraine has a chance to end the war with Russia before the U.S. midterm elections in November, President Vol