AMMAN, April 4 (Reuters) - The U. report published in February said the threat posed by Islamic State and its affiliates to international peace and security was high in the second half of 2022 and had increased in and around conflict zones where it has a presence. Late last year, Islamic State announced it had appointed a previously unknown figure - Abu al-Hussein al-Husseini al-Quraishi - as its leader after the previous leader was killed