Revision of Russia's nuclear doctrine

Last night, along with the strengthening of the yen, the Nikkei 225 futures plunged and fell below 38,000 yen.
It appears to be related to news about the relaxation of Russia's criteria (doctrine) for the use of nuclear weapons.
It is believed to be in response to Ukraine's use of long-range missiles supplied by the United States.
The price has since rebounded.

(Quoted from Reuters)
- If Russia or its ally Belarus faces a serious threat to its sovereignty and territorial integrity from a conventional weapons attack, it will consider using nuclear weapons.
- Russia considers attacks on it by non-nuclear-weapon states supported by nuclear-weapon states as a joint attack.
Large-scale attacks by aircraft, cruise missiles, and drones in Russian territory could also trigger a nuclear attack.
Aggression against Russia by some allied countries is considered aggression by the entire alliance.

Geopolitical risks remain high regardless of Russia or Ukraine, so we must remain cautious of the headlines in the future.
Many times taking reflexive positions can lead to setbacks, so we must be careful.