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COP27 convened politicians from nearly 200 nations alongside business leaders, scientists and activists to discuss climate-related issues, solutions and goals.

Meteorological association says climate change propelled earth into "uncharted territory." new data shows the past seven years are on track to be the warmest on record while this year alone the global sea left rise accelerated to a new high happening before our eyes. ahead of the summit the white house announced a plan to get the u.s. to net zero greenhouse gas emissions by 202050. kaitlan collins is following all of us this edinburgh. president bide listen speak shortly. i wonder reality check here. what are the expectations? hard commitments? >> reporter: >> that's the big question. doesn't ...

Rallying cry during past elections. >> the goal right now is to rally the american people around a progressive agenda. making public colleges and universities tuition-free. >> tuition-free? >> i am kin campaigned on hard commitments of medicare for all, tuition-free public college. jillian: they appeared to have abandoned the message. why the change now? joining us now is matty duffler. where has the message gone? >> democrats are finally running up against that old addage which is that you won't believe how expensive something is until it's free. all the ideas about offering free tuition requ...

And then they walk away from hard commitments. i hope the president is aware and focused on that history. the danger now is that by talking up, by hyping up the success we actually haven't had to date the president is undermining his own leverage, leverage he built up effectively with economic pressure. it's been a green light to china talking up the benefits of these talks, a green light to china to lesson the pressure to let north korea off the hook. the challenge is how to keep north korea at the table and how to get effective results, to date we haven't seen any. >> richard haass, it does ...