"The cumulative actions of the DPRK since their last nuclear test compel us to look at a range of measures that would apply pressure," the spokesperson for the US mission to the United Nations said Tuesday.
"We are exploring options for a response to this series of provocations with our Security Council colleagues."
North Korea on Saturday carried out a failed missile launch, just hours after US Secretary of State Rex Tillerson urged the council to impose new sanctions, warning that a failure to act could lead to "catastrophic consequences."
The latest failed launch "only reinforced our resolve" to increase the economic and diplomatic pressure on North Korea , said a Security Council diplomat.
North Korea is seeking to develop a long-range missile capable of hitting the US mainland with a nuclear warhead, and has so far staged five atomic tests since 2006, two of them last year. (APP)