The greyzone is defined as "competitive interactions among and within state and non-state actors that fall between the traditional war and peace duality." But what do these interactions look like and how can we deter the most harmful greyzone activities engaged in by hostile states?

Chris Cash is joined by Elisabeth Braw, a senior fellow at the American Enterprise Institute (AEI) and writer at the Financial Times and Foreign Policy magazine, to discuss how greyzone aggressions target our institutions. Elisabeth lays out the complex nature of nonmilitary threats to national security, China's greyzone tactics, and the need for whole-of-society responses in liberal democracies.

Read Elisabeth's latest book - The Defender's Dilemma

Follow Elisabeth on Twitter - @elisabethbraw