The Group of Seven countries are considering banning almost all exports to Russia, in an extension of the sanctions regime against Moscow for its ongoing invasion of Ukraine, a Japanese government source said Friday. Japan is set to host the G-7 summit in May in Hiroshima, western Japan, where discussions will take place on measures to expand support to Ukraine and strengthen sanctions on Russia among other key topics. Related coverage:G-7 digital chiefs to call for more research, governance of AIG-7 unified in backing Taiwan peace, urges China to act responsiblyFOCUS: Japan's G-7 leadership role faces tests at decarbonization talks