Angela Merkel and Donald Trump head for clash at G20 summit

German chancellor plans to make climate change, free trade and mass migration key themes in Hamburg, putting her on collision course with USA clash between Angela Merkel and Donald Trump appears unavoidable after Germany signalled that it will make climate change, free trade and the management of forced mass global migration the key themes of the G20 summit in Hamburg next week.
The G20 summit brings together the world’s biggest economies, representing 85% of global gross domestic product