According to the Sunday Times, Israel will deploy three nuclear-capable submarines for permanent positioning in the Persian Gulf.
That can only mean that Netanyahu has abandoned any plans to strike Iran, and has turned instead to a deterrence policy.
The deterrence would be fake. In the small Persian Gulf, Iran would have no trouble locating and destroying Israeli submarines. The type of nuclear-armed cruise missiles that can be deployed on submarines are not very effective: they detonate at too low an altitude. Iran has sufficient means, including TOR-1M and Chinese S-300 batteries, to intercept low-flying cruise missiles. Most importantly, the ayatollahs might not mind exchanging Tehran for Tel Aviv in a series of nuclear explosions.