The Trump administration is fast-tracking billions of dollars in emergency weapons sales to allies in the Middle East, while European partners are left to wait longer for deliveries. DW's Ben Fajzullin talks to Stephen Biddle from Columbia University about battle readiness and the reliability of the US as a defense supplier and military partner. Chapters: 00:00 Transatlantic ties under strain as US fast-tracks Middle East arms 01:33 Emergency arms deals and the cost to US readiness and allies