This comes after Donald Trump told reporters that he would walk away from negotiations if he thought either party was hindering the agreement.
Cooperation with the US is vital for strengthening deterrence and executing this complex mission, but Israel must be prepared to act alone.
Steve Witkoff said that the US was "open to compromise" within Iran nuclear talks, only to backtrack his comments and call for the elimination of Iran's nuclear enrichment and weaponization program.
Iran’s government cannot afford to wait for a deal with Washington, Iran’s government spokesperson Fatemeh Mohajerani said.
Iran and the US are due to hold a second round of talks in Oman on Saturday over Tehran's escalating nuclear program, with President Donald Trump threatening military action if there is no deal.
"It is imperative for the world that we create a tough, fair deal that will endure, and that is what President Trump has asked me to do," Witkoff stated.
Khamenei said Tehran retains a "very pessimistic" overall view of the US and should not tie its national affairs to nuclear negotiations.
Lavrov praised Trump's "common sense" and for saying that previous US support of Ukraine's bid to join the NATO military alliance was a major cause of the war in Ukraine.
Steve Witkoff, Trump’s envoy and the US representative in nuclear talks with Iran’s foreign minister, to Fox: "Iran must not possess nuclear weapons, and it should not enrich uranium beyond 3.67%."
Keith Kellogg proposed a partition of Ukraine resembling post-WWII Berlin, with the UK and France controlling the western zone, Russia in the east, and a demilitarized buffer zone in between.