Sri Lanka, March 30 -- The war has displaced 20% of Lebanon's population in just three weeks, with an average of 19,000 children forced to flee their homes every day, according to the United Nations Children's Fund (UNICEF).

"One of the challenges that we have is indeed reaching those children, particularly in the south of Lebanon," said Marcoluigi Corsi, UNICEF Representative to Lebanon, in an interview with CNN on Monday.

"There are children who are trapped in communities which are very difficult to reach, and even more so after the bombardment and the blowing away of several bridges by airstrikes."

The Israeli military has blown up several bridges over the Litani River - which bisects Lebanon - as part of a broader assault in the so...