Given a travel related situation, and given a specific question about the situation, summarize the question into a title
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Question: Asking for a friend.

He does not hold any dual citizenship and only has a Lebanese passport. I am well aware of the diplomatic tensions these two countries hold but I was under the impression Israel did not have any restrictions on who could visit. However, I've seen contradictory answers online.

I suspect he might be questioned upon arrival. To makes things simpler, he's been living in Paris for years now and has no ties to anyone involved in politics in Lebanon.

Can he visit Israel with only a Lebanese passport? Also, even if he asks the Israel customs not to stamp his passport, can Lebanon find out he's been in Israel? Can he get in trouble when he decides to visit Lebanon?

Answer: Can one visit Israel with a Lebanese passport only?

Question: I'd like to see the Catacombs of Paris in September 2017. It appears that tickets can be purchased in advance from http://b12-gat.apps.paris.fr/accueil.aspx ... is the demand such that purchasing tickets in advance is necessary if you want to see it?

Answer: catacombs of paris: should tickets be purchased in advance?

Question: I'm a US citizen and I hold a Washington state Enhanced Driver's License. I'm living in Vancouver for a bit.

Can I fly domestically without my passport? Micheal Seifert's answer indicates my license will work for the airline, but what about security?

The web says government-issued ID is acceptable for domestic travel, but that obviously presumes Canadian government.

I get a normal US driver's license probably wouldn't work, but surely if it's good enough for CBS, it's good enough to fly?

Answer:
Can I fly within Canada with a US EDL?