Stop the War coalition has an interesting article about the UK and NATO:

[https://www.stopwar.org.uk/article/nato-is-a-threat-to-our-security/]

NATO is a Threat to our Security

Why would anyone want Britain to be part of a military bloc that fights endless wars and has armed Israel’s genocide?

Zarah Sultana has come in for some stick lately for advocating Britain’s withdrawal from NATO “because it is an imperialist war machine.” Citing Iraq, Libya and Afghanistan, she said: “If we look at NATO’s track record, (its) endless wars have made the world less safe.” Centrists confined their abuse to calling Sultana “a crank”, “infantile”, “delusional” and, of course “a Russian asset.” Others piled in with predictably racist attacks.

Sultana was accused by her attackers of being ignorant of the history. One claimed Afghanistan was “a defensive war.” Another said NATO had “not started one war” and had “ended the war in Libya.”

As usual, these comments do not stand up to scrutiny as the article goes on to point out.

It's well-known that the invitation for Ukraine to join NATO's 'defensive' eastwards expansion and therefore Russia losing its Sebastopol Black Sea naval base in Crimea was the primary reason for Russia's invasion and re-annexation of Crimea (it was first annexed into the Russian Empire by Catherine the Great in 1783), for as the FT reported:

[https://www.ft.com/content/5e5e9624-b7d7-4c11-bc12-4078a6d293bb]

Putin claimed the US was considering an armed incursion from Ukraine into Russian territory and said Nato (sic) expansion had boxed it into a corner. “We can’t retreat any further,” he said. “Do they really think we’ll sit idly as they create threats against us?”

In other words, who wants an enemy military alliance on their borders?

Who indeed.

Certainly the USA wouldn't want one in Canada or Mexico and nor would the UK in Ireland, Scotland or Wales, which is why England invaded these countries in the first place, killing plenty of Irish, Scottish and Welsh people in order to secure England's borders from armed incursions that were sometimes backed by foreign powers (e.g. France and Spain).