Trump administration lays broad legal grounds for military strike on Iran - The Washington Post

Administration officials have invoked al-Qaeda and said any conflict will be limited and would not involve ground troops.
https://www.washingtonpost.com/world/national-security/trump-administration-lays-broad-legal-grounds-for-military-strike-on-iran/2019/07/03/739c3ef8-9d0d-11e9-b27f-ed2942f73d70_story.html