US will not undermine security of allies in Persian Gulf, Marco Rubio says
If Iran does not show such a desire, the US president will certainly have other options.
Rubio heads to Gulf after rocky start to US-Iran talks
US Secretary of State Marco Rubio visits Gulf allies amid tense US-Iran negotiations and regional conflicts.
Iran denies discussion of nuclear program in talks with US in Switzerland
During the talks between the United States and Iran in Switzerland, the Iranian nuclear program was not discussed, according to Tehran.