Netenyahu is just playing his cards. Threatening Iran and Syria is just another power play to assert dominance in the region. Netenyahu feels he has everything going along in his favour, and not only does US president Donald Trump back him 110%, but he also has other western nations playing into his Zionist's hands as well. We keep seeing the terror that Israel has been afflicting upon Syria and Palestine, and with Iran standing in Israel's way all the time it makes it more difficult for them to continue doing that. Israel's hope is that with backing from the US and other western allies, they can stage a successful war against Iran and end their blockade of Israel's plans. With Iran's help in Syria, Israel's ISIS has been brought down, and now for Israel the next step is a US led war in Iran (because of Israel's unsuccessful attempts at that in Syria). Israel is like that annoying little brat that always convinces the bigger kid (like the US) to fight the others by manipulation and bribery. Iran gets in the way of the Zionists' plans for "Greater Israel", and that's why Netenyahu wants to bring down Iran by all means possible.