Russia and North Korea have signed a defence pact to help each other in the event of aggression against them.As part of a two day trip, Putin visited Pyongyang, greeted by a red carpet, roses and ceremonial gunfire before signing what Kim Jong Un has called an alliance.On the Sky News Daily, Niall Paterson speaks to Sky's Moscow correspondent Ivor Bennett and Beijing correspondent Nicole Johnston about what this unusual relationship between the leaders means for their respective countries, and the rest of the world.Producer: Sydney PeadEditor: Philly BeaumontPromotions Producer: David Chipakupaku