Israeli Prime Minister Benjamin Netanyahu has said a ground offensive will be launched against Hamas if the rockets do not stop.

9:13PM EST November 16. 2012 - President Barack Obama spoke separately to Israeli and Egyptian leaders Friday night as violence escalated in Gaza, and Israel signaled a possible ground invasion.

Rockets landed outside of Jerusalem and two struck near Tel Aviv on Friday night, panicking people who have normally been outside the range of the missile attacks coming from Hamas-controlled Gaza.

Hamas, a U.S.-designated terror group, and Palestinian Islamic Jihad said the strikes were improved missiles that have greater range. They were the first Hamas rockets to be targeted at Jerusalem, and the first since the 1990s to come near Tel Aviv.

The White House says Israeli Prime Minister Benjamin Netanyahu called Obama Friday to provide an update on the situation. Netanyahu expressed appreciation to Obama and the American people for U.S. investment in the Iron Dome rocket and mortar defense system. The Iron Dome system used by Israel to blow up Hamas rockets in the air intercepted rockets fired toward Ashdod in southern Israel, according to the Haaretz newspaper.