It is not everyone who gets an invitation for an overnight stay at the Bush family ranch in Texas. The NATO secretary general Jaap de Hoop Scheffer and his wife have been welcomed there by the US President and his wife.
The two leaders held talks on Sunday, with discussions said to have been dominated by the surge in violence in Afghanistan.
Kosovo and relations with Russia are also thought to have been high on the agenda.
Official figures show that more than 1600 people have been killed in insurgency-related violence in Afghanistan this year.
The US has been urging some European allies to provide more troops to fight Taliban forces in the south of Afghanistan.
It also wants an easing of restrictions on how and where soldiers can fight.