Ukraine uses ground robots to fire at Russian targets and attack positions while its own soldiers stay at a safer distance.

They’re not shooting precision-guided bullets — yet. But Raytheon may be the closest yet, with a tiny guided missile a soldier can launch from a rifle-mounted grenade launcher. Meet the Pike, a ...

Manty thanks to the students and educators at Mary Lynch Elementery School for sharing these letters to Santa Claus with the Observer. The letters are being published just as the kids wrote them.