SEOUL, April 25. /ITAR-TASS/. US President Barack Obama stated that North Korea posed “direct threat” to USA. The American leader made this statement after talks with South Korean President Park Geun-hye in Seoul, Yonhap news agency reported on Friday.

Obama stressed that provocative steps of Pyongyang would lead it to a greater isolation.

Meanwhile, Park Geun-hye stated that South Korea and the US would do everything possible for controlling the provocations from DPRK. North Korea is fully ready to conduct its fourth nuclear test, the South Korean president noted.

Park Geun-hye added that South Korea and USA agreed to make their national missile defense systems interoperable.