Russia accuses Ukraine of striking same Moscow building that was hit by drone days ago

“Depending on where they are launched from, if there is a way to get through the initial line of defenses, then there will probably be a very poor ability to track them in real time,” said professor Justin Bronk, an expert in military air power and technology at the Royal United Services Institute, a defense think tank in London. The most advanced defense systems around Moscow “are typically optimized for ballistic missile defense and are looking at targets and objects which are coming in at extremely high speeds and from very high angles,” Bronk said.