Pictures: Getty Christopher Furlong.
Pictures show Barack Obama arriving in Glasgow's SEC for the COP26.
The 44th president looked smart in a black suit and pale grey shirt as he made his way through the conference centre.
Although he wore a black face mask, the former leader could be seen smiling and waving at crowds of people waiting to get a photo of him.
He was joined by the US Special Presidential Envoy for Climate, John Kerry, and he will give a highly anticipated speech at 2pm.
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