Israel can put pressure on anyone to prevent the acquisition of defensive weapons systems that is true. But to threaten to go to war with Syria and subject itself to chemical and biological weapons and thus have to resort to nuclear weapons because Lebanon's defence forces are going to get a missile system first deployed in 1957? And which is easily and quickly neutralised using AGM-88 HARM missiles. Sorry doesn't wash, although I must admit life would be easier if Hezbollah would become a formal part of the Lebanese Armed Forces. Then Iran and Syria wouldn't need to go through the rigmorale of smuggling weapons.
Israeli teen lightly wounded from stone throwing in West Bank settlement of Kiryat Arba (Haaretz)
from the article: U.S. official: Arming of Hezbollah could spark Israel-Syria war