They could seek refuge in Israel but why would we refuse them here? I don't think they have cut off heads in France for a few hundred years now.
1 - They should be seeking asylum in Israel - period.
2 - We should not give them asylum as France is not a terrorist state. Nor is it in any lawless condition of anarchy, like say Columbia with the Drug Cartels.
And I don't care if they're French Jews or Pagans from Latvia, the asylum ploy sucks. Most of the scum we legally let in claim 'asylum'.
But the bottom line here is the whole point OF Israel's existence is for people like this. But they probably don't like the climate there so they think, 'Hey there's always the USA, they're suckers for a sob story'. Well sorry, screw that - we're full up.