SKorea conducts drill after North missile

US Secretary of State Rex Tillerson and South Korea's foreign minister have agreed to consider tougher sanctions against North Korea following the North's launch of a ballistic missile that flew over Japan.

Yoon Young-chan, a spokesman for the presidential Blue House in Seoul, said South Korean fighter jets conducted bombing drills at a firing exercise ground after Pyongyang's latest missile launch.

Separately, the South's Yonhap news agency cited an unidentified Blue House source as saying the US was considering the deployment of strategic assets to the Korean peninsula.