- President Trump succeeded in his first military strike on a Syrian airfield
- Juliette Kayyem: However, his lack of a defined foreign policy is deeply unsettling
- "Keep them guessing" is not a presidential doctrine, it's a lack of foresight, writes Kayyem
CNN national security analyst Juliette Kayyem is the author of the best-selling "Security Mom: An Unclassified Guide to Protecting Our Homeland and Your Home." She is a professor at Harvard's Kennedy School, a former Assistant Secretary of Homeland Security in the Obama administration, host of the national security podcast The SCIF and founder of Kayyem Solutions, a security consulting firm. The opinions expressed in this commentary are hers.
(CNN)The elusive search for a "Trump Doctrine" in foreign affairs was made more pressing after the US president authorized the launch of a missile attack in Syria in response to President Bashar al-Assad's apparent use of chemical weapons against his people.