The Flash Briefing is a daily news update every weekday morning from Todd Jeffries. 

• Secretary of State Marco Rubio is hailing "tremendous progress" after a weekend of peace talks with Ukraine 
• The Department of Homeland Security will be investing more than a billion dollars to modernize air travel security at U.S. airports 
• Texas State troopers will now have some immigration authority when pulling over a driver as part of a new agreement with I.C.E.