By Rami Amichay and Eli Berlzon JERUSALEM (Reuters) – Valerie Bendersky was just seven when he fled to Kazakhstan to escape the Nazi invasion of Ukraine. Nearly 80 years later he has had to abandon his homeland once again, this time in the face of Russian invaders. Bendersky is one of almost 300 Jewish Holocaust survivors from Ukraine who have been given refuge in Israel since Russian President Vladimir Putin ordered his troops into the former Soviet republic two months ago. “I have lived through two tragedies,” the 85-year old said, speaking from his new home in Petah Tikva, near...