ABC News(KYIV, Ukraine) -- Ukrainian first lady Olena Zelenska is "afraid" the world's attention is turning away from the war, more than 18 months since Russia launched a full-scale invasion of her country. Speaking with ABC News in an interview in Kyiv, Zelenska said, "sometimes people become reluctant, people talk about Ukraine fatigue." "This is the topic of our existence. We can't stop fighting for ourselves. So my message is, please don't stop to help us fight," Zelenska said. Zelenska is hosting The Summit of First Ladies and Gentlemen on Wednesday in Kyiv, ...