Nov. 20 (UPI) -- U.S. President Joe Biden has given authorization for Ukrainian forces to be supplied with antipersonnel mines, according to officials in Washington, in the second watershed shift in U.S. policy in three days. The mines are for use on the eastern battlefront where Ukrainian Armed Forces, hamstrung by a lack of troops and munitions, are coming under relentless pressure from Russian forces which have been gaining ground in recent months, two unnamed U.S. officials told The