JAKARTA, Indonesia (AFP) — The United States, South Korea and Japan vowed Tuesday to consider all options against North Korea, including counterstrikes, in the wake of an unprecedented blitz of missile tests by Pyongyang that has sent regional tensions spiraling.

The flurry of North Korean launches include last month's test of its most advanced intercontinental ballistic missile and a missile that flew across the de facto maritime border and landed near South Korean waters for the first time since the Korean War.

US special representative for North Korea Sung Kim held talks with South Korean counterpart Kim Gunn and senior Japanese foreign ministry official Takehiro Funakoshi in Indonesia's capital Jakarta, where they warned of Pyongyang's threat to regional security.

"We will examine all options, including counterstrike capabilities," Funakoshi, of the Japanese foreign ministry's Asian and Oceanian Affairs bureau, said.

The talks, which follow meetings in Tokyo and Seoul this year, were held at the US embassy in Jakarta, where Sung Kim also serves as ambassador to Indonesia.