"Just as France did for us in aftermath of the infamous 9/11 attacks, we should invoke Article 5, the mutual defense clause, of the North Atlantic Treaty," GOP presidential candidate John Kasich, governor of Ohio, says in statement after Paris attacks. Under Article 5 of the NATO Treaty, an attack on one member is considered to be an attack on all Kasich reiterates his call for refugee havens on Syrian borders to be enforced by no-fly zones
Source: Bloomberg.com news