Jason Black, Roger Noriega, Rep. John Fleming, Gordon Chang

JASON BLACK, grid expert at Battelle Memorial Institute:

• The vulnerabilities to and challenges of protecting the electrical grid
• Steps that comprise a "holistic approach" to strengthening the security of the grid

ROGER NORIEGA, American Enterprise Institute:

• Electrical grid incidents in Mexico and Arizona
• How the Guatemalan and Mexican governments have played a role in the invasion of the southern U.S. border
• Brazil's embarrassing loss in the World Cup and how it's contributing to political upheaval in the country
• The current BRIC summit in Brazil and the challenges these economies face

Rep. JOHN FLEMING (LA-4), member of the House Armed Services Committee and former U.S. Navy Medical Officer: 

• Hamas rocket attacks on Israel
• The Caliphate newly established by the Islamic State
• 1 Trillion in cuts to U.S. defense capability in the past five years
• Missile defense and nuclear posture 

GORDON CHANG, Forbes.com:

• A surprising US agreement to collaborate with China on smart grid technology 
• Implications of Chinese giant Alibaba's initial public offering for U.S. investors
• Evidence of internal strife within the Chinese government