Joe Biden:
Work with NATO, with U.S. as the indispensable leader. 
US can't do it alone stay engaged in the world. 
Opposition to European alliances like NATO is dumb. 
$750M to Central America to address root cause of migration. 
Revive Alliance for Prosperity with Central America.

Cory Booker:
Opposes family separation policy at southern border. 
Re-examine relationship with Saudi Arabia. 

Pete Buttigieg:
Use diplomatic strategies in Venezuela, not military. 
Supports Israel; situation more complex than seen in media. 
Pay attention to assessments of intelligence agencies. 

Julian Castro:
21st century Marshall Plan for Central and Latin America.
Rebuild alliances & reclaim role as world leader. 
Strengthen our relationship with allies to keep us safe. 

Bill de Blasio:
Signs legislation protecting against sexual harassment. 

Tulsi Gabbard:
Defends meeting Syria's Assad; supports Trump on North Korea. 
Skeptical of Iran nuclear deal. 
Supports Egyptian dictator in fight against terrorism. 
Against criticizing India's treatment of Muslims. 
U.S. should focus on fighting terrorism, not regime change.
Met with Syrian president; for "extreme vetting" of Syrians. 

John Hickenlooper: 
Supports a strong NATO, strengthening ties with allies. 

Jay Inslee:
Welcome Syrian refugees. 

Amy Klobuchar:
Stand with our allies, invest in diplomacy. 

Beto O`Rourke:
Help refugee asylum seekers at home in Northern Triangle. 

Marianne Williamson:
Support Israeli security & Palestinian human rights. 
Return moral principles to our foreign policy.

Source: OnTheIssues.org