very historic and they would not have happened without him. Not to mention, he already had a claim on history as a 27 year old man. The fact that 35 years later his eloquent words spoken out of his passion against the Vietnam War were repeated by many including Republicans shows that they did impact people's view of war.
It is true that unlike Obama and the Clintons, he will never be President. However, I think that history will be kinder to him than the people you hear. In fact, in terms of legacy, his Iran nuclear deal probably averted a war with Iran and the US/China pact on climate change and the various other agreements that led to the Paris accord will hopefully be seen as the point where the world really moved to fight climate change.
If you watched the signing of the Paris Accord at the UN in NYC, you would have heard that Kerry received a lot of very warm applause by his fellow ministers -- and I assume it was not ALL because he signed holding his very adorable little granddaughter.
BOTH of these accomplishments were given little chance of success when Kerry took over as Secretary of State. Yet, other than the ACA, these two accomplishments are Obama's three most significant accomplishments. He deserves credit for giving Kerry the space and the permission to push for them.
https://s.yimg.com/ny/api/res/1.2/gXB0SAUMtjkfDuw5K88BsQ--/YXBwaWQ9aGlnaGxhbmRlcjtzbT0xO3c9ODAwO2lsPXBsYW5l/