which country has most nuclear weapons?
['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. ... ']