The last one perhaps, but people betray those that gave them aid all the time, like Germany did to the Soviet Union, which was one of its primary trading partners.
This is more than aid, the Russian regime is reliant on Germany for it's existence, the Germans will get concrete pledges of support and if the Whites betray them then the Germans will replace them with someone who will, namely the Bolsheviks.
Additionally, this Empire of Russia would still want to invade Japan, among other things.
It's going to have a hard time constructing an alliance with Britain in that case.