I Don't Think That Was Ever In Question.

https://www.bbc.co.uk/news/world-us-canada-58527989

After bombing the airport the UK intentionally gave the US false intelligence.

In part to trigger memories of the Battle of Mosul.

Mainly though to scare people away from the airport as the US/UK-led NATO mission was spectacularly defeated.

The US had their options explained Day 1;

Get the UK to wholly reverse it's choice to self-exclude.

Respect the UK' choice to self-exclude.

Have the UK drag them down, beneath the waves.

https://www.youtube.com/watch?v=ccx5vVgNeak (Just For You, Pennywise, Official Audio)