How did Wilhelm II, Nicholas II and George V feel about fighting one another in WWI, given how they were cousins? | AskHistorians Archive Observer

How did Wilhelm II, Nicholas II and George V feel about fighting one another in WWI, given how they were cousins?

by Jarl_Swagruuf

Also, how did George and Wilhelm react when Nicholas and his family were killed during the revolution?

Jewbiedewbie

Follow up;

Did they actually have a personal relationship to one another? Besides being related, did they actually know eachother or meet eachother on a personal basis/level?