years. it is the technical teams in the backrooms of this conference to hammer out all the details. but the world leaders who have been setting the scale of the ambition. three who have chosen the scale of the ambition. three who have chosen not the scale of the ambition. three who have chosen not to the scale of the ambition. three who have chosen not to attend the scale of the ambition. three who have chosen not to attend in - the scale of the ambition. three who have chosen not to attend in person| have chosen not to attend in person a xijinping of china, that dominic vladimir putin of russia and jaya bolsonaro of brazil, countries seen as key to the summit s success. brazil is home to the largest area of amazon rainforest, one of the world s latest offences against climate change but is that international correspondent reports from one state there greatest defences against linus change. deforestation of the amazon has soared to 12 year high the president bolsonaro. the a