British volunteer fighters are suspected of triggering a deadly attack on a Ukrainian military base after their cellphones were traced in the vicinity.
When 30 Russian cruise missiles slammed into the Yavoriv site near the Polish border on March 13, at least 35 persons were killed, possibly including three British ex-special forces men.
The International Centre for Peacekeeping and Security, where Ukraine was training foreign civilian volunteers for its international brigade, is thoug...