Israel announced it had authorised the call-up of up to 40,000 reservists for a possible ground operation, even as it began moving convoys of additional tanks and other armour to the Gaza border.Netanyahu said continued rocket attacks on Israeli communities would not be tolerated. "Therefore I have ordered the military to significantly broaden its operation against Hamas terrorists and against the other terrorist groups inside Gaza," he said. "I call on you to display patience, because this operation could take time."