He's done it before, and he's doing it again.
In his new book, "Time to Get Tough," Donald Trump lashes into President Barack Obama and threatens to run against him next year if the Republicans don't nominate a strong candidate.
Beating the drum even louder, Mr. Trump details his net worth – which he puts at $7 billion – and says he's prepared to pour a large chunk of his $270 million in liquid assets into a presidential bid. (Mr. Trump values the Trump brand alone at $3 billion.)
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