He has for decades been a strong advocate on the environment including climate change, but it is impossible to overlook his person life.
He was born into his largely ceremonial role and there is no reason to think he would have been prominent in anything if he was not born a prince.
He may still be coming because the Prime Minister may see him visiting as a way to improve the UK's position with Trump. Therefore, I do not expect him to push Trump on climate change or backing down on Iran.
From observation, any push on an issue publicly seems to make Trump double down, rather than back down. On Iran, Trump is more concerned with having people credit him with a better than Obama's deal and setting the middle east up for peace. It is not clear there is anything King Charles could say or do to move him in a better direction.
On Iran, the vain Trump faces a very real possibility that he will fail by his own standards. His stated goals are all over the place, but are by and large not meetable.
Iran will not agree to regime change and we can't achieve it.
Getting a comprehensive deal like the international deal achieved through excellent diplomacy, backed by outstanding technical teams is not likely sending a slumlord venture capitalist and a real estate conman and the least likable VP with a similar lack of experience with all three sharing an unwillingness to listen to career diplomats and scientists.
Although there was always concern that Iran could try to close the Straits of Hormus, this war pushed them to do it and they now know for a fact that they can do it and it creates havoc for the rest of the world. If this ends in a face saving agreement, in reality it leads to a stronger, more radical Iran.
Where the JCPOA resulted in closing off for more than a decade the threat of an Iranian nuclear bomb, it also could (with no President Trump) in a world where both sides kept their promises led to greater trust and potentially resolving other issues. Trump, on the other hand gives us the legacy of unilaterally ending agreements and later, engineering a sneak attack while publicly negotiating.
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