Question: which country has the most powerful nuclear power?
Answer: United Kingdom — 200 nuclear warheads, 120 of which have been deployed. China — 290 nuclear warheads. ...  Pakistan — 150 to 160 nuclear warheads. ...  India — 130 to 140 nuclear warheads. ...  Israel — 80 to 90 nuclear warheads. ...  North Korea — 20 to 30 nuclear warheads. ...