BBC article; Ukraine, the UN and history's greatest broken promise, Fergal Keane, 9 April 2023
The invasion of Iraq in 2003 by a US-led coalition polarised opinion “The then UN Secretary General Kofi Annan would later call the invasion illegal. "You reap what you sow - and what you sow includes your own double standards," he says.”
https://www.bbc.co.uk/news/world-europe-61021862
Although the suspension of Russia from the UN human rights council is a welcome small step in the right direction – again note the 24 against and 94 abstentions.
https://www.theguardian.com/world/2022/apr/07/russia-suspended-un-human-rights-council-ukraine
The point about all this is not that Turkeys will vote for Christmas (give up the veto) but that there are ways to reform which can circumvent the security council veto
Just suppose a power that isn’t a great power any more could take the lead; the symbolism of Johnson in Kiev may be powerful, imagine then the symbolism if he’d accompanied Volodymir Zolensky to the UN and supported calls for reform putting the UK seat on the Security Council on the agenda; a post Brexit global Britain that we could all get behind.