This video that goes over how to enable and use Microsoft’s newly announced Global VNet Peering. This feature expands on existing VNet peering, allowing for connectivity between VNets in two different regions. More information can be found here 

Commands used in this video are:

Get-AzureRmProviderFeature -FeatureName AllowGlobalVnetPeering -ProviderNamespace Microsoft.network
Register-Azurermproviderfeature -FeatureName AllowGlobalVnetPeering -ProviderNamespace Microsoft.network
Register-AzureRmResourceProvider -ProviderNamespace Microsoft.Network