Section 153 in THE BHARATIYA NYAYA SANHITA, 2023 – BNS

Waging war
against
Government
of any foreign
State at peace
with
Government
of India.

153. Whoever wages war against the Government of any foreign State at peace with
     the Government of India or attempts to wage such war, or abets the waging of such war, shall
     be punished with imprisonment for life, to which fine may be added, or with imprisonment of
     either description for a term which may extend to seven years, to which fine may be added, or
     with fine.