A nuclear deal clinched between Iran and six major world powers that caps more than a decade of negotiations has stoked talk of a joint Nobel Peace Prize for Tehran and Washington this year, despite the likelihood of strong objections from some quarters.

U.S. President Barack Obama, who won the prize in 2009 for promoting nuclear non-proliferation, hailed the Iran deal on Tuesday as a step toward a "more hopeful world." But Israel pledged to try to halt an "historic surrender."

Awarding the prestigious award to Washington and Tehran would fit a pattern of nuclear-themed peace prizes in years ending in '5,' commemorating the bombings of the Japanese cities of Hiroshima and Nagasaki in 1945.