Christopher Liddell, Chief Financial Officer at Microsoft since 2005, and the former senior New Zealand business leader is the architect of Microsoft’s recent $44.6 billion takeover offer for Yahoo. Liddell is now dealing with the rejection of that offer and Microsoft’s imminent acquisition fight. “You have to be disciplined and ruthless,” Liddell told The New York Times before Yahoo’s board turned down the offer. “We should see acquisitions as a way of growth. We should not be embarrassed at all.” Liddell, who since joining Microsoft has made 50 acquisitions, was previously CFO at forest product company International Paper and CEO at Carter Holt Harvey.