The US national security adviser John Bolton spoke in Jerusalem about new sanctions against Iran and other Middle East political issues.
Iran's President Rouhani has said the latest US sanctions against the country demonstrate Washington's "desperation" and will not succeed.
President Trump signed further measures aimed specifically at Iran's supreme leader Ayatollah Khamenei on Monday.
The emergency meetings in Mecca come just as the United States plans to beef up its troops in the Gulf after attacks on oil assets there, which it blames on Tehran.
US national security adviser John Bolton said key Maduro aides who promised opposition a peaceful transition of power must keep their word.
The international community is taking a wait and see stance on Venezuelan opposition leader Juan Guaido's efforts to oust President Nicolas Maduro
The national security adviser said U.S. foreign policy should be "based on the pursuit of American national interests."
U.S. National Security Advisor, John Bolton, is thought to be considering sending troops to Columbia as part of his battle with Venezuelan President Maduro.
“It looks like your eagle has eaten all the olives and has left only the arrows,” Putin joked, comparing current US policy to the symbols on the country's coat of arms.
Putin wants to continue treaty talks with Trump in November
US National Security Adviser John Bolton addressed reporters following a meeting with Russian President Vladimir Putin amid talks that the US could pull out of a Cold War-era arms-control treaty.
US envoy Bolton holds talks with Russia's Lavrov on nuclear treaty