Biden, Netanyahu set tone on Iran for Obama visit to Israel

WASHINGTON (Reuters) - U.S. Vice President Joe Biden insisted on Monday that President Barack Obama was not bluffing about using force to thwart Iran's nuclear ambitions if all else fails, even as Israeli Prime Minister Benjamin Netanyahu called for a "credible military threat" against Tehran.

Seeking to reassure Israel and its U.S. supporters just weeks before Obama visits the Jewish state, Biden cautioned that all options, including sanctions and diplomacy, must be exhausted to ensure that the international community will be supportive if military action is deemed necessary.