Back when the entire Gulf blockaded Qatar from 2017-21, Qatar depended on Iran [0] for food. Qatar and Iran also had a gentleman's agreement to collaborate with each other to export LNG [1]. Both Qatar and Iran also collaborated with each other to support Hamas [2] and the Houthis [3].

The fact that a Qatari national employed by a think tank that is patronized by the Qatari royal family [2] and is published by Qatar's state-owned media is a massive about face and signals how livid Qatari policymakers are.

Heck, Qatar's interior ministry has begun arresting Iranian sympathizers [5] and taken control of Qatar's subreddit [6] - "You might be anonymous but we aren’t, the mod team is known to the authorities and we’re trying our best to cooperate with them and comply with all the guidelines."

Qatar (not Oman) was Iran's last friend in the Gulf.

[0] - https://www.aljazeera.com/news/2017/6/25/iran-hassan-rouhani...

[1] - https://en.wikipedia.org/wiki/South_Pars/North_Dome_Gas-Cond...

[2] - https://www.dw.com/en/who-is-hamas/a-57537872

[3] - https://sites.bu.edu/pardeeatlas/research-and-policy/back2sc...

[4] - https://www.dohainstitute.edu.qa/EN/About/Pages/default.aspx

[5] - https://www.straitstimes.com/world/middle-east/qatar-arrests...

[6] - https://www.reddit.com/r/qatar/comments/1rt2fth/timeout/