O Irão, a Síria e os misséis do Hezbollah

Missiles neutralizing Israeli tanks

"They (Hezbollah guerrillas) have some of the most advanced anti-tank missiles in the world," said Yossi Kuperwasser, a senior military intelligence officer who retired earlier this summer.

"This is not a militia, it's an infantry brigade with all the support units," Kuperwasser said.

Israel contends that Hezbollah gets almost all of its weaponry from Syria and by extension Iran, including its anti-tank missiles.

That's why cutting off the supply chain is essential — and why fighting Hezbollah after it has spent six years building up its arsenal is proving so painful to Israel, officials say.