If the U.S. went into Pakistan and took control of their nuclear weapons because the U.S. feared that Al Qaeda would take control of them then the stand point of Israel would be that the U.S. was right. Israel believes that the U.S. is right in doing this because not only can they relate with the fear of enemies getting nuclear weapons-Iran-the U.S. is one of their biggest supporters and the relations between Pakistan and Israel are bad.
Pakistan doesn't even officially recognize Israel as a country let alone a people-Jews-who even deserve a small portion of what they did receive at the end of the World War II. So since the formation of this Jewish State the relations between Israel and Pakistan have been severe, Both angry for what they feel is an injustice from the other people.
Now to go along with that the U.S. is one of Israel's biggest supporters since the formation of this Jewish State and their relations are good, both supporting the other. Does this sentence sound familiar? It should because Israel's relations with the U.S. are the exact opposite of their relations with Pakistan. So of course Israel would go along with what the U.S. is doing.
Also the other reason that Israel would agree with the U.S. in this situation is because Iran is supposedly trying to build nuclear weapons and not only does the Iranian Government openly hate Israel(President of Iran-Mahmoud Ahmadinejad- said "Israel should be wiped off the map.") but they also don't recognize them as a country. In this situation Israel can relate to the U.S.'s stress. They can say hey we understand. If Iran started to whip out a nuclear weapons then we'd try to take them out. But you are just taking control before something that serious actually happens good job.
Some people say that the U.S. taking over the weapons would be wrong, but this report isn't about right or wrong, good or evil, but Israel's standpoint.
So basically Israel would agree with the U.S.'s actions in the event that they went into Pakistan and took control of their Nukes because not only can Israel relate to the U.S.'s predicament, but also because their relations with the U.S. are good and with Pakistan bad.
