Sebastian Gorka, Diana West, Luis Fleischman, Bill Roggio

SEBASTIAN GORKA, author of "Fighting the Ideological War," examines how the historical roots of Russia and Ukraine are reflected in their current conflict.

DIANA West, author of "American Betrayal," discuses Switzerland's recent vote capping the number of immigrants from the European Union.

Dr. LUIS FLEISCHMAN, senior adviser to the Menges Hemispheric Security Project and author of "Latin America in the Post-Chavez Era," weighs in on the political underpinnings behind the ongoing protests within Venezuela.

BILL ROGGIO, of the Long War Journal, discusses the characteristics of the Taliban in Pakistan and Syria, and what unique threats they pose to the US.