The big questions are who or whom did it and for what goals?

While the obvious answer is that the Israelis and the Deep State are behind this, there is a possibility that they are a red herring used by other suspects to camouflage their actions. The President is not a popular man with the people and I bet that elements within the government (corrupt or honest) don't like him either and would rather see him gone.

Time will reveal all things, but we need to keep an open mind on the truth once it comes out, even if it goes against the popular biases we hold.