Gaza braces for all-out war

This sounds bad:

With hundreds of troops and tanks being deployed along the edge of the territory there were growing fears that the air bombardment could be followed by a ground incursion.

"The indications here on the ground are certainly that the build-up is there, that the preparations are there for a ground offensive," Al Jazeera's Hoda Abdel Hamid, reporting from Izmit in Israel, said.

The Israeli cabinet approved the call-up of 6,500 military reservists and Ehud Barak, Israel's defence minister, has warned that the air raids could be followed by a ground offensive.

"If it's necessary to deploy ground forces to defend our citizens, we will do so," Barak's spokesman quoted him as saying.

Tensions in the Middle East are already high. I wonder how the Arab world will react if Israel invades Palestine? It can't be good...