Germany offered help.
Bloomberg
Sept. 1 (Bloomberg) -- German Foreign Minister Joschka offered assistance to the U.S. government in the aftermath of Hurricane Katrina, which has
caused devastation on the U.S. Gulf Coast.
``The federal government is prepared to give any assistance or support to bring this terrible natural disaster and its effects under control,''
Fischer said in an e-mailed statement today, without elaborating on the offer.

Quite a few other nations also offered help.
allheadlinenews
The State Department said offers so far had come from Belgium, Canada, Russia, Japan, France, Germany, Britain, China, Australia, Jamaica, Honduras,
Greece, Venezuela, the Organization of American States, NATO, the Netherlands, Switzerland, Greece, the Dominican Republic, El Salvador, Mexico, South
Korea, Israel and the United Arab Emirates.
Assistance ranged from medical teams, boats, aircraft, tents, blankets, generators and cash donations.

I see Israel is on the list.
I wasn't sure if they had offered or not.