Former US president George W. Bush on Wednesday mourned his defense secretary Donald Rumsfeld, who led the Iraq invasion, as a "very good man." "A man of intelligence, integrity, and almost inexhaustible energy, he never paled before tough decisions, and never flinched from responsibility," Bush said in a statement that did not explicitly mention the controversial decision to attack Iraq. "We mourn an exemplary public servant and a very good man." sct/bfm