By Edith M. Lederer THE ASSOCIATED PRESS UNITED NATIONS (AP)- Children experienced the highest number of “grave violations” in conflicts verified by the United Nations in 2022, with the conflicts between Israeli and Palestinians and in Congo and Somalia putting the most youngsters in peril, the U.N. children’s agency said Wednesday. UNICEF also expressed particular concern about their plight in Haiti, Nigeria, Ethiopia, Mozambique and Ukraine, where Russia has been put on the U.N. blacklist. “Grave violations” include the recruitment and use of children by combatants, killings and injuries, sexual violence, abductions, and attacks on schools and hospitals. Omar Abdi, UNICEF’s deputy executive director, told the U.N . Security Council the more than 27,000 grave violations, up from 24,000 the previous year, are the highest number verified by the U.N. since…