Obama Adviser Wraps Up Trip To Israel As Iran Makes Threats President Barack Obama's national security adviser has concluded three days of talks with Israeli leaders in Jerusalem amid an escalating focus on Iran's nuclear intentions. The visit comes in advance of a March 5 meeting at the White House between Obama and Israeli Prime Minister Benjamin Netanyahu. National Security Adviser Tom Donilon was the latest American official to visit Israel. He met with Netanyahu, Defense Minister Ehud Barak and others. Last month, the chairman of the U.S. joint chiefs of staff, Gen. Martin Dempsey, traveled to Israel. The White House described the talks as a reflection of the Obama administration's "unshakable commitment to Israel's security." The U.S. has urged Israel not to attack Iran's nuclear facilities. Dempsey said in an interview broadcast Sunday that such an attack is "not prudent."