Hamas fires on Jerusalem

Palestinian terrorists fired a rocket aimed at Jerusalem on Friday, setting off air raid sirens throughout the city and opening a new front in three days of fierce fighting between Israel and armed groups in the Gaza Strip.

The Israeli campaign has been limited to airstrikes so far. But military officials say they are considering expanding it to a ground campaign.

Lt. Col. Avital Leibovich, a military spokeswoman, said the military had called 16,000 reservists to duty on Friday as it geared up for a possible ground offensive.

She said the army had authority to draft an additional 14,000 soldiers. She would not say where the troops were deployed.