UNICEF works in some of the world's toughest places, to reach the world's most disadvantaged children. Nicaragua in Nicaragua. UNICEF works in some of the world's toughest places, to reach the world's most disadvantaged children. To defend. To save their lives. . To defend. Nicaragua,México y en algunos casosya se han hecho casinos, en los que es preciso gen. Nicaragua in Nicaragua. To save their lives.