Prime Minister Binyamin Netanyahu spoke with US President Barack Obama and thanked him in the name of all Israelis for the assassination operation that killed al Qaida leader Osama bin Laden
Netanyahu added that "the operation sends a message of United States' determination in fighting terror." RELATED:Clinton: US will 'take the fight' to Taliban post-bin LadenNew footage shows where bin Laden was gunned downIsraeli assessment: Threat level not up post-bin Laden hit
The Prime Minister's office said that Obama thanked Netanyahu for his call and reiterated Washington's obligation in the fight against terrorism.
Earlier, Obama said the world was a better place after the death of bin Laden.
Speaking at a ceremony at the White House, Obama said it was a good day for the country and that the United States had kept its commitment to see that justice was done.
CIA Director Leon Panetta said al Qaida will "almost certainly" try to avenge the US killing of bin Laden.
"Though bin Laden is dead, al-Qaida is not, Panetta said. "The terrorists almost certainly will attempt to avenge him, and we must - and will - remain vigilant and resolute."
US Homeland Security Secretary Janet Napolitano said US homeland security officials were at a "heightened state of vigilance" for possible retaliatory attacks.
The Homeland Security Department has no plans to issue a specific advisory about credible or imminent threats at this time, she said in a statement.
"Our security posture, which always includes a number of measures both
seen and unseen, will continue to respond appropriately to protect the
American people from an evolving threat picture both in the coming days
and beyond," Napolitano said.
The US Homeland Security Department scrapped the color-coded warning
system last month and said it would instead issue alerts only when
credible or specific threats emerged.