since coming to power in 2005, she has met and worked with four different us presidents. 0ne four different us presidents. one issue that has come up time and again as climate change. for more on this, i m joined from washington byjeffrey rathke, president of the american institute for contemporary german studies atjohns hopkins university. it is worth pointing out that germany has been a very staunch ally of the united states under angela merkel s leadership there have been times when there have been times when there have been tensions and faculties and perhaps not quite a meeting of minds on issues like mama change? a meeting of minds on issues like mama change? that is true and i think like mama change? that is true and i think president like mama change? that is true and i think president biden, - like mama change? that is true and i think president biden, in l and i think president biden, in the press availability today made the remark that friend sometimes disagree and i thi