NBC News National Security and Global Affairs Correspondent Dan De Luce and Retired Four Star General Barry McCaffery join Alicia Menendez in for Nicolle Wallace on Deadline White House with the breaking news that the United States has begun conducting military operations in Syria and Iraq against Iran backed militias in retaliation to the attacks which took the lives of 3 U.S. service members at Tower 22 last week.  » Subscribe to MSNBC: https://www.youtube.com/msnbc Follow MSNBC Show Blogs MaddowBlog: https://www.msnbc.com/maddowblog ReidOut Blog: https://www.msnbc.com/reidoutblog MSNBC delivers breaking news, in-depth analysis of politics headlines, as well as commentary and informed perspectives. Find video clips and segments from The Rachel Maddow Show, Morning Joe, The Beat with Ari Melber, Deadline: White House, The ReidOut, All In, Last Word, 11th Hour, and Alex Wagner who brings her breadth of reporting experience to MSNBC primetime. Watch “Alex Wagner Tonight” Tuesday through Friday at 9pm Eastern. Connect with MSNBC Online Visit msnbc.com: https://www.msnbc.com/ Subscribe to the MSNBC Daily Newsletter: https://link.msnbc.com/join/5ck/msnbc-daily-signup Find MSNBC on Facebook: https://www.facebook.com/msnbc/ Follow MSNBC on Twitter: https://twitter.com/MSNBC Follow MSNBC on Instagram: https://www.instagram.com/msnbc #Iraq #Syria #WorldNews