 With the United States withdrawal from the Intermediate-Range Nuclear Forces Treaty, the range of the PrSM will be increased beyond the '499 km' limitation previously placed upon it by the treaty.After entering service in 2023, the Spiral One upgrade will incorporate a multi-mode seeker in 2025 with the ability to home in on radio-frequency emissions from land and ship radars and an infrared imaging mode to strike precise points.Spiral Two will focus on enhanced lethality and Spiral Three will increase missile range to .