North Korea confirmed Monday it test-launched an intermediate-range ballistic missile capable of reaching the U.S. territory of Guam, the North’s most significant weapon launch in years, as Washington plans steps to show its commitment to its Asian allies.

Sunday’s launch could be a prelude to bigger provocations by North Korea such as nuclear and long-range missile tests that pose a direct threat to the U.S. mainland, as the North tries to further pressure the Biden administration to win sanction relief or international recognition as a legitimate nuclear state.