George W Bush tributes his father George H W Bush as "a noble man & the best father", as World figures pay their respect at his funeral

​An emotional George W Bush has paid tribute to his father, former President George H W Bush, during a state funeral in Washington.
 
Mr George W Bush, himself a former president, described him as "a noble man, the best father". 
 
All surviving US presidents attended the funeral, sharing a pew in the US National Cathedral in Washington DC.
 
Mr Bush senior, who served as the 41st US president between 1989 and 1993, died on Friday at the age of 94. He will be buried in his home state of Texas, alongside his wife Barbara.