Nothing strange about this when you have a terrorist group (Hezbollah) hijacking a large part of Lebanon and causing instability. Foreigners (investors, businessmen, tourists) based in Lebanon, people married with Lebanese have been targeted/kidnapped before.
Hezbollah is hostile to the Bahraini government (I think that you will figure out why that is) despite Lebanese and Bahraini people having no problems with each other (of course).
It would only mean something big if other countries had done something similar simultaneously. Or maybe that will happen eventually but I doubt it for now.