China's Foreign Minister Wang Yi has warned that future negotiations between Tehran and Washington are likely to face greater challenges, saying the next phase of talks will be "more difficult" than the initial stage.

Foreign Minister Wang Yi said on Tuesday there should be no turning back in the Iran-United States talks, still less a return to the use of force, while voicing China's readiness…

China’s top diplomat told his Pakistani counterpart on Tuesday that the next phase of negotiations between the United States and Iran – which Pakistan has