Japan premier warns US, Iran 'accidental conflict' possible

Japanese Prime Minister Shinzo Abe traveled to Tehran on Wednesday to warn that an "accidental conflict" could be sparked amid heightened tensions between Iran and the U.S., a message that came hours after Yemen's Iranian-backed Houthi rebels attacked a Saudi airport, wounding 26 people.Abe's trip is the highest-level effort yet to de-escalate the crisis as Tehran appears poised to break the 2015 nuclear deal it struck with world powers, an accord that the Trump administration pulled out of last