List of mandates for a 2nd referendum

SNP election win 2015
SNP election win 2016
SNP election win 2017
SNP election win 2019
SNP election win 2021 to come
Pro-independence majority at Holyrood
Pro-independence majority of Scotland’s MPs at Westminster
The Claim of Right
International law
The UN Charter
Scottish public opinion

I could go on.

There will be a second referendum and unionists only have themselves to blame. It will be defeat from the jaws of their 2014 victory.