The head of the U.N. Children's Fund expressed frustration Friday that the aid organization does not have access to areas in eastern Ukraine where Russia has claimed control amid the ongoing war."We know children are in need, but we can't get to them very easily, and that is disturbing," UNICEF Executive Director Catherine Russell said in an interview in Tokyo.Following Russia's invasion of Ukraine in February, around 5.5 million Ukrainian children, including many who have been evacuated abroad, have been affected, according to a UNICEF report released in September.Russian President Vladimi…READ FULL ARTICLE