Great Britain is a bad ally. They got us involved in WWI which led to WWII and with the end of the Cold War and the emergence of the EU as the supranational government.
It is par for the course that they got us into Iran way back in 1953.
Finally President Trump has the appropriate relationship with Great Britain and we used to be that way before WWI.
We can trade with them but we shouldn't trust them on anything and of course we shouldn't try to overthrow governments throughout the world.
The only successful and beneficial action by the CIA of which I am aware, is bolstering the Shah of Iran in 1953. Other than that, the CIA pretty much screws up everything they touch.
And we didn't "overthrow" that government. We prevented the overthrow of that government. The Shah was in power legitimately.
If the government is a legitimate threat then I don't agree. Overthrowing the Nazis, for example was fully justified. Overthrowing a democratically elected government in 1953 because they won't do our bidding? No.
There's a gray area in between, as to what constitutes a threat to us and who decides if they are a threat. I think we're seeing that in this debate.