Nid Cymru yw'r unig wlad sy'n ceisio trechu'r problemau hyn. Mae'r Cenhedloedd Unedig wedi ysgogi trafodaeth dros y ddwy flynedd ddiwethaf â phobl ar draws y byd ynghylch nodau datblygu cynaliadwy newydd. Y bwriad yw ceisio efelychu llwyddiant Nodau Datblygu'r Mileniwm. Mae'r nodau newydd sydd wedi'u hawgrymu o fewn meysydd trechu tlodi; dysgu i bawb; gwella iechyd, cydraddoldeb a chynhwysiant cymdeithasol a mynd i'r afael â'r newid yn yr hinsawdd.
Wales is not alone in trying to tackle these problems. Over the past two years there has been a global conversation facilitated by the United Nations with people the world over to seek their views on new sustainable development goals, building on the successes of the Millennium Development Goals.  Suggestions for new goals have been in the areas of tackling poverty; learning for all; improving health, equality and social inclusion and tackling climate change.