The threat to the American homeland from various types of missiles is expected to increase exponentially over the next decade, according to the director of national intelligence.

China, Russia, North Korea, Iran, and Pakistan have all been researching and attempting to develop “an array of novel, advanced, or traditional missile delivery systems with nuclear and conventional payloads, that put our homeland in range,” Director of National Intelligence Tulsi Gabbard said during Wednesday’s annual threat assessment hearing before the Senate Intelligence Committee.