European stocks mixed as US-Iran peace talks stall, Trump rejects Iran's proposal

European stock markets are expected to open mixed following a breakdown in peace negotiations between the US and Iran. Iran demanded an end to all war fronts and sanctions relief, but US President Trump called Iran's counterproposal "totally unacceptable." The ongoing conflict and diplomatic tensions have caused oil prices to rise and US futures to fall. Investors are also watching Trump's upcoming China visit, which could impact global trade and geopolitics.