US President Barack Obama reached out to Israeli Prime Minister Benjamin Netanyahu and updated him about the ongoing negotiations between world powers and Iran over its nuclear program while underscoring his strong commitment to prevent Tehran from obtaining a nuclear weapon.

Obama's telephone call to Netanyahu came as the Secretary of State John Kerry made an unannounced trip to Geneva to hold talks with the Iranian leadership and possibly give a final shape to the agreement on Tehran's nuclear weapons program.

The White House said, "The President provided the prime minister with an update on negotiations in Geneva and underscored his strong commitment to preventing Iran from obtaining a nuclear weapon, which is the aim of the ongoing negotiations between the P5+1 and Iran."