Israeli warplanes hit TV transmission towers today in Lebanon, knocking the nation’s leading private network off the air and cutting phone links to some regions.

Israeli troops and tanks massed on Lebanon’s border today and officials said the army was preparing for a limited incursion in Lebanon in the near future.

Israeli troops met fierce resistance from Hezbollah guerrillas today as they crossed into Lebanon to seek tunnels and weapons after warning residents in a nearly 20 mile swath of the south along the border to flee.