The Latest Developments in Ukraine-Russia Border Tensions.

The Freedom of Russia Legion and Russian Volunteer Corps, two pro-Ukraine groups, have claimed responsibility for the recent raid into Russia. Both groups are predominantly Russian and seek to overthrow Putin's regime. While Ukraine denies any connection to the groups, the RVC commander claims that Ukraine encouraged their actions in Belgorod and that they consult with Ukraine's military. The Kremlin sees the fighters as "Ukrainian militants," while Washington is concerned that American armored vehicles sent to Ukraine may have been used in the attack.