Passing through Israeli border with two countries' passports

Welcome to Thorn Tree.

Hundreds of thousands of Israelis, of whom I am one, have dual nationality (because they or their parents came from somewhere else and they still have their previous nationality) and travel on two passports and nobody thinks that's in any way strange or suspicious. Use whichever you like or both (as long as you enter and leave country "A" on the same passport, and enter and leave country "B" on the same passport, country A and+ country B don't have to be on the +same passport as each other). Israel doesn't deny entry to anybody based solely on their nationality or where they have been.

There is no problem at all about entering Morocco with an Israeli stamp.

Nobody can tell you how long the interrogation will take, or even whether you'll be interrogated. Most people zip through in two minutes unless they obviously arouse suspicion. Just answer all questions truthfully, no matter how silly, irrelevant or repetitious they seem.

Thanks for your reply. My friend in Cairo (who has been to Israel several times and has family there) suggested that the Israeli border guards might be offended if I present both passports and request they stamp my Colombian one. He also said that my appearance might be enough to arouse suspicion on the part of the guards. For these reasons he strongly recommended I enter on my American passport.

Do you think his concerns are overblown?

Yes.

There is a lot of misinformation in your OP.

You had better enter Israel on your US passport, it will afford you far more protection during interrogation at the border.

Your friend in Cairo knows what he's talking about, listen to his advice.

Neither Morocco or Malaysia care about previous travel to Israel, this is only a problem if you want to go other Middle Eastern countries (ie Saudi Arabia, Syria, Iran) or if you want to go to the Sudan. If it is a issue though, I would stick to travelling on one passport for the whole portion of travel in the middle east. Entrance or exits stamps from countries that share a crossing with Israel will make your travel there obvious. It would be ok to fly into Egypt with a different passport than you used on your layover in Russia, so using your Columbian passport in Russia and your American passport in Egypt, Israel, and Jordan would be fine. However I do think running into "interrogations" at the border are rare and I think whether you use your Columbian or American passport won't make much difference. If you ever needed consular help, you are entitled to use either (no matter which one you choose to enter with)...I am not quite sure what catw was getting at. Nor do I think being Columbian would make you more prone to having more questions. If you had another middle eastern passport or Arab ancestry it might be different.

You had better enter Israel on your US passport, it will afford you far more protection during interrogation at the border.

Catw implies that "interrogation" by immigration officials is standard procedure. This is not the case; thousands of tourists arrive daily and almost all are asked only the standard two questions posed by immigration officials at every airport around the world.

"protection" from what, Catw ?

The USA being a close ally of Israel, American citizens are usually treated with more care than South American citizens by Israeli immigration officials, who will tend to suspect you're an economic migrant should you show your Colombian passport.

And yes, you'll be interrogated. 100% of travellers are, it's the rule. Only the length of the interrogation varies.

Considering the current rate of unemployment in the US, I would consider any American to be a possible economic migrant :-)