By David Lewis LONDON, March 21 (Reuters) - The U.S. military has multiple MQ-9 drones operating in Nigeria alongside 200 troops to provide training and intelligence support to the military, which is fighting Islamist militants across the north,

Nearly 30 drones were shot down over Moscow and the surrounding region on March 20-21, Mayor Sergey Sobyanin claimed. Hundreds of Ukrainian drones have reportedly targeted Moscow in the past week.

Unidentified drones reportedly detected near Fort McNair military base in Washington D.C., where top officials are housed, sparking security concerns.

Unmanned drones are cheaper than missiles, easy to mass-produce, can travel long distances, and strike with precision. For all these reasons they are reshaping conflicts around the globe. We hear from NPR correspondents about how drones are changing the nature of war and the balance of power in Ukraine,

Moscow Mayor Sergei Sobyanin says air defences shot down 27 drones during an attack on the Russian capital, with no casualties officially reported.

San Francisco police are partly attributing the city's sustained decline in crime to new technology such as drones, but opponents argue that they expand surveillance in public spaces. Here's how the department is using them.

The technology of war is evolving fast, and drones are at the center of it. We've seen this in the ongoing U.S.-Israeli war with Iran. Unmanned drones are cheaper than missiles, easy to mass produce,

A large number of “unauthorized drones” were seen flying over a major U.S. Air Force base in Louisiana, home to long-range B-52 bombers capable of carrying nuclear weapons, triggering a lockdown earlier this month.