US President Donald Trump says a major conflict with North Korea is possible over its nuclear and ballistic missile programs, while China says the situation on the Korean peninsula could escalate or slip out of control.

Dhaka expresses deep concern over the recent rocket launch by North Korea and urges the country to refrain from any action that might escalate tension in the Korean Peninsula.

North Korea has abruptly cancelled UN Secretary General Ban Ki-moon's visit one day before he was due to arrive.