North Korea has nothing to fear from any U.S. move to broaden sanctions aimed at cutting it off from the global financial system and will pursue “acceleration” of its nuclear and missile programs, a North Korean envoy told Reuters on Tuesday.

This includes developing a “pre-emptive first strike capability” and an inter-continental ballistic missile (ICBM), said Choe Myong Nam, deputy ambassador at the North Korean mission to the United Nations in Geneva.

Reuters, quoting a senior U.S. official in Washington, reported on Monday that the Trump administration is considering sweeping sanctions as part of a broad review of measures to counter North Korea’s nuclear and missile threat. (For Monday’s story, click reut.rs/2n9HZ5a)

“I think this is stemming from the visit by the Secretary of State (Rex Tillerson) to Japan, South Korea and China…We of course are not afraid of any act like that,” Choe told Reuters.