Japanese PM, Shinzo Abe is heading towards Iran with a keen eye on international sanctions and domestic politics.
The visit, which begins on Wednesday, is partly aimed at easing tensions between Washington and Tehran over Iran's nuclear programme.
However, observers have expressed doubt over what can actually be achieved.
For Abe, the trip might help boost his image as a global statesman ahead of elections back home, according to the experts.
Abe will be the first Japanese prime minister to visit Iran in four decades and is expected to hold talks both with Supreme Leader Ayatollah Ali Khamenei and President Hassan Rouhani.