Hezbollah doesn't need cabinet approval or the majority of the citizens of Lebanon behind them to start a war. The next war between Israel and Lebanon is entirely at the discretion of the unelected Nasrallah. If his position is strengthened by war, then war it will be...no matter the cost to the Lebanese civilians.
Several injured after Jerusalem protest march against Al-Aqsa restrictions dispersed (Haaretz)
from the article: 'Syria helped Hezbollah amass some 40,000 missiles'