Why did Bush and Putin stand together against Iran?

From the New York Times:

President Bush and Russian President Vladimir Putin projected a united front Monday against Iran's suspected nuclear weapons program.

''When Russia and the United States speak along the same lines, it tends to have an effect and therefore I appreciate the Russians' attitude in the United Nations,'' Bush said. ''We're close on recognizing that we got to work together to send a common message.''

Putin predicted that ''we will continue to be successful'' as they work through the U.N. Security Council.

What can we credit for this sunny development?

Earlier, Bush and the Russian leader piled into a powerful speedboat navigated by Bush's father -- former President George H.W. Bush. Under a bright morning sunshine, Putin and the Bushes roamed close to the shoreline around the Bush family's oceanfront estate for about an hour and a half.

Ah, male bonding.