AHVAZ, Iran — Amid wails and vows of revenge, thousands of Iranians on Monday attended a mass funeral service for victims of a weekend attack targeting a military parade that killed at least 25 people.[gh:iframe src="https://omny.fm/shows/ap-news-headlines/playlists/podcast/embed?style=artwork" width="100%" height="180" frameborder="0"][/gh:iframe]The dead from Saturday's attack in the southwestern city of Ahvaz, blamed on Arab separatists, ranged [...]