Why are UK, US & other nations asking citizens to be ready for emergencies?

Governments in UK, US, Japan and across Europe are urging citizens to prepare for emergencies amid concerns over Russia’s war in Ukraine, cyberattacks and natural disasters. While US focuses on military resilience and Japan on disaster readiness, NATO’s eastern members remain alert to potential Russian threats. UK Defence Secretary Wes Streeting warned that Britain must prepare for a possible war.