The Israeli government has thus far failed to live up to Ukrainian President Volodymyr Zelensky’s expectations of it during the Russia crisis, Ukraine’s ambassador to Israel Yevgen Korniychuk said Monday.

He also expressed consternation that Israel refrained from co-sponsoring a U.S. motion at the United Nations to censure Russia over its invasion of Ukraine.

Zelensky is Jewish. His grandfather fought Nazis in WWII and many of his relatives were killed in the Holocaust.