By Dmitry Antonov and Andrew Osborn MOSCOW (Reuters) -Russian-born ice skating coaches and former world champions Yevgenia Shishkova and Vadim Naumov were on board the American Airlines plane that crashed into the Potomac River in Washington on Wednesday night,

They include two teenage athletes, their mothers and two former Russian stars, according to their club in Boston.

Officials say a Russian drone has blasted a hole in an apartment building in northeastern Ukraine during a nighttime attack that killed at least six people and wounded nine others

Russian first-person view (FPV) drones that use fiber optic cables instead of radio waves to connect with their controllers, making them impervious to jamming and other forms of electronic warfare. The Magyar Birds Brigade claims it has devised a system using mobile radars to provide early warning for incoming FPV drones several kilometers away.

Ukraine carried out a drone strike on targets in Russia's Tver region, according to Kyiv intelligence sources.