Manila, July 22 -- US Secretary of State Marco Rubio on Wednesday accused Iran of failing to honour commitments in negotiations reached with Washington last month and said Tehran was "not serious about talks," while warning that allowing it to control the Strait of Hormuz would set a "very dangerous precedent" for international trade and freedom of navigation.

Speaking at the ASEAN Post-Ministerial Conference with the United States in Manila, Rubio said Washington remained committed to diplomacy and was willing to pursue a negotiated resolution with Iran.

"I just want to reiterate once again, the United States is always committed to diplomacy. We are open-minded and always willing to engage in negotiated settlements of differences. And ...