Not sure how reliable is this guy- and I don't think at all that he is referring literally to explosive devices, but just to long-running intelligence and spying operations with sophisticated logistics.
Anyway consider this. If you were Israel, where would you put more effort in:
1) fighting off a militia that is in no case a match for a country armed with F35s and nuclear weapons;
2) keep benefiting from the "unwavering" support of the West (and, by a lesser extent, the flow of money from the US)- which both grants you a state-of-the-art army and weapons, and a full diplomatic cover and support in any circumstance, from the most important actors in the world.
Now consider the amount of effort and ingenuity they put in 1), and infer the amount of effort and ingenuity they must be putting in 2).
Anyway consider this. If you were Israel, where would you put more effort in:
1) fighting off a militia that is in no case a match for a country armed with F35s and nuclear weapons;
2) keep benefiting from the "unwavering" support of the West (and, by a lesser extent, the flow of money from the US)- which both grants you a state-of-the-art army and weapons, and a full diplomatic cover and support in any circumstance, from the most important actors in the world.
Now consider the amount of effort and ingenuity they put in 1), and infer the amount of effort and ingenuity they must be putting in 2).